ISSN 0846-3611 GEMMOLOGY CANADA

From the Editor:

Since my return from a very successful AGTA GemFair in Tucson, Arizona we have been busy shipping orders and answering questions about our courses and products. There are several activities scheduled for April and May; see below. We will be attending the Las Vegas Antique Jewelry & Watch Show at the Paris Las Vegas Hotel, May 30 – June 2, 2013. You will find more information in the next GL Newsletter.

BC Gem & Mineral Show, Abbotsford – April 12, 13 & 14

Visit us at the Ag-Rec Building, Central Fraser Valley Fairgrounds, 32470 – Haida Drive, Abbotsford, British Columbia

Colourful World of Minerals Friday: 10:00 am – 8:00 pm Saturday: 10:00 am – 6:00 pm Sunday: 10:00 am – 5:00 pm

Admission: Adults – $6.00, Students (6 – 17) – $2.00, Under 6 – Free

At the C.I.G. booth we have our full line of gem testing tools and several new titles of gem books on display; buy at the show and save on taxes and shipping costs. The new Handbook of Gemmology DVD will be available for sale.

We are also demonstrating the new GL Gem Raman PL532 TEC system and the GL Gem Spectrometer with an innovative attachment. There is a special show price for the GL Gem Raman PL532/Gem Spectrometer Combo system available.

Please bring any gems or minerals for quick identification (even set in jewellery; max. 5 pieces per customer); we are particularly interested in jade, treated gemstones and diamonds of any kind (synthetic, coloured, HPHT, irradiated, etc).

We also have for sale a used (but in perfect working condition) Kyowa Zoom Stereo Trinocular Microscope with dark field attachment; asking price $ 650 (new over $ 2,500) OBO.

The optical quality of the Kyowa Stereo Zoom microscopes is well established. The highly corrected optical system is a parfocal twin zooming design with objectives inclined at 12 degrees. The SDZ head has a zooming range of 0.7x to 4.5x which can be extended by using auxillary lenses and 10x, 15x, 20x wide field eyepieces. The wide field image is sharp and erect; no refocusing is required throughout the zoom magnification range.

The trinocular head is designed for use with digital imaging systems. A push/pull lever transfers the left side image to the photo tube. The right side image is retained and can be viewed simultaneously with photography.

Far East Gem Travel 2012

I posted several YouTube videos with highlights of my trip to Myanmar (Burma) and the GIT 2012 Post Conference Tour to Chanthaburi (Thailand) and Pailin (Cambodia). Go to Myanmar, Thailand, Cambodia Gem Travel.

The GIT 2012 website has a large photo gallery and the eProceedings from the 3rd International Gem and Jewelry Conference can be downloaded; the latter provides the practising gemmologist with the latest information about current issues in the jewellery trade.

The Handbook of Gemmology (eBook) Released

Features include: State of the art ‘Flipping Book’ technology (Win/Mac Versions) Powerful Search Engine Post-its Highlighting Interactive Table of Contents Zoom in/Zoom out Thumbnail Images Full Index & Printable PDF Index

Geoff Dominy will be at the C.I.G. booth for a “Meet the Author” event on Saturday, April 13 during the BC Gem & Mineral Show in Abbotsford.

Covering all aspects of the science of gemmology and gem identification this innovative and interactive e-Book consists of 654 digitized pages and over 700 colour photographs, diagrams and illustrations in a DVD format.

A must buy for any gemmologist, student or jeweller who demands the latest technology and the most up-to-date information.

Available in .exe (Windows), .app (Mac), ePUB or Mobi file formats. Purchase your DVD ($ 49.95) on-line at Gemlab Books & Instruments.

GEM 250 Gem Identification II (Advanced)

• Course Type: Four-day/week-end practical class in major cities. Certificate after written and practical exam.
• Prerequisite: “Gemmologist” certificate or similar gemmological qualification.
• Fee: $ 995 ($ 200 exam fee for A.G. Diploma not included); comprehensive study guide, Gemstone Inclusion Library, use of lab equipment and study stones. Recommended optional text: Handbook of Gem Identification by Liddicoat (12th ed.)
• Date/Location: Sat – Tue, May 18 – 21, 10 a.m. – 4:30 p.m., Vancoucer (YVR) Airport Hotel (special room rate), Richmond, B.C.); spring exam day: Wednesday, May 22

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, CVD, synthetic diamonds and many others. Gem enhancement techniques such as heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied. Hands-on exercises with our in-house developed GL Gem Spectrometer and GL Gem Raman system. Practising gemmologists may use this lab class to up-grade their skills.

Day 1: Review of gem testing instruments; introduction to advanced identification techniques using the GLGemSpec and GL Gem Raman PL532 spectrometer.

Day 2 and 3: Routine testing with microscope and selected gemmological tools to identify difficult gem materials loose and set in jewellery.

Day 4: Identification of challenging gem materials and their treatment with guest speaker covering the following diamond topics:

Diamond Types, Causes of Colour in Natural Diamonds, Chameleon Diamonds, HPHT-grown Diamonds, CVD-grown Diamonds, Testing and Identification Methods for Lab-grown Diamonds (UV lamp, microscope, UV-VIS-NIR, FTIR, Raman and PL spectrometers, XRF, etc), Clarity Treatments (Fracture Filling, Traditional Lasering, KM Laser Drilling), Colour Treatments (Coating, Irradiation, Annealing, HPHT, Combination Treatments)

Register on-line here.

For more Info please call: 604-530-8569

GEM 370 GL Gem Raman Workshop

Using PowerPoint presentations the development and use of Raman spectrometers is introduced. Procedure of proper calibration with Laser Glasses (190-548nm); learning step-by-step testing method with GLGemRaman software and searchable database. Practical testing of a number of interesting gem materials by the participants under supervision of the workshop facilitator Presenter: Wolf Kuehn, B.A., M.A., Dipl.oec, FGA, FGG

GEM 360-1 Sat, May 18 from 1:00 – 4:00 p.m. (3 hours)

Location: Vancouver (YVR) Airport Hotel, Richmond B.C., Canada

Fee: $ 295 ; limited to 5 participants. To register on-line go here.

Participants who purchase a GL Gem Raman PL532 system within one month after the workshop will receive a $ 295 discount.

To Register, please call: 604-530-8569

We reserve the right to cancel courses if there is insufficient enrolment; upon return of all course materials students will receive a full refund for the tuition paid but no other compensation can be offered. Please wait with travel arrangements until final confirmation.

View/Download and read carefully our refund policy (PDF).

CGL – Canadian Gemological Laboratory offering Courses

Vancouver based CGL has released their Spring 2013 schedule for one-day workshops covering several gemmological topics and rough diamonds; go to their website for further information.

Participants in the ADVANCED PROGRAM – DIAMONDS April 26 (Friday) and May 4th (Saturday) and COLOURED STONES April 27 (Saturday) and May 3rd (Friday) have an opportunity to work with the GL Gem Spectrometer and the GL Gem Raman PL532 systems; other advanced testing instruments are demonstrated as well.

SPAM Mail and other Nuisances

Are you receiving messages like the following:

Hi, I am here in Tanzania with Tones of gemstone names Felisper (Ruby type). Will you kindly direct to the possible buyer!

We are the distributors for industrial Olympus, and othe prime brands in Colombia, we know that many of our customers will be interested in 
your products, we would like to be distributors in Colombia of your products.

You probably are and you are not alone. We receive dozens every day as it is easy to figure out the possible e-mail accounts for a particular domain. And there is no way to stop it even with an elaborate SPAM filter (suggestions are welcome). We are also being attacked by silent/hoax and/or soliciting phone and fax calls as people can use Skype and other means to reach us from anywhere in the world for free.

As a consequence we are sometimes unable to answer our phone; we have implemented an answering service asking you to leave your name and a message and we will call you back as soon as possible. We apologize for this inconvenience.

The Canadian Institute of Gemmology is a member of the World Gem Society. For a nominal fee you can access a variety of resources available on-line.

From the Editor

After travelling in Brazil for three weeks and giving presentations to various university groups including the Federal Police of Brazil during the “II Seminario Iberoamericano de Geologia Forense”(Brasilia, Oct. 2 -4) we are already  preparing for the next AGTA Gemfair Tucson, Jan. 4 – 9, 2014.

The GL Gem Raman PL532 TEC is now being used for scientific research at the University of St Andrews, Scotland (see below) and at The Mineral Technology Center (CETEM) – a research institute of the Ministry of Science, Technology and Innovation (MCTI) in Rio de Janeiro, Brazil.

Understanding Fluorescence 2013, August 31

I attended the one-day Professional Development Course at the Department of Earth and Environmental Sciences, University of St Andrews, Scotland; the workshop was part of a series of events associated with the UK Luminescence and ESR meeting and immediately followed it.

The course was targeted at gemmologists, valuers and jewellery professionals and all individuals interested in gems and minerals. It provided a unique opportunity to expand understanding and use of fluorescence in gemmology and other mineral sciences.

GL Gem Spectrometer reviewed in French Journal

An article about the GL Gem Spectrometer appeared in the French Revue de gemmologie AFG N 183 (2013) (PDF 1.7 MB, with permission by the author)

Developments for GL Gem Spectrometer and GL Gem Raman PL532

We are working on several projects exploring the PL (photoluminescence) features of the GL Gem Raman PL532 for detection of HPHT treatments in diamonds and colour enhancements of gemstones.

I highly recommend a recent publication HPHT-Treated Diamonds – by Springer; you can download the complete Chapter 2 on Diamonds Used for HPHT Treatment.

It provides an excellent overview of the types of diamonds including their atomic models and describes testing methods for coloured diamonds.

Of concern is the statement on page 16 that “HPHT-treated cape-yellow diamonds are also something to encounter within the gem diamond market” as confirmed during a workshop at the September Hong Kong Jewellery Show. Until now we assumed that the cape lines (which are easily detected in the GL Gem Spectrometer) indicated “untreated”.

For a limited time we offer again the GL Gem Raman PL532/Gem Spectrometer Combo (until October 31). We also have one GL Gem Raman PL532 TEC unit for sale in Brazil; please contact me for details.

Identification of Jadeite Treatments with the GL Gem Spectrometer

The light holder of the GL Gem Spectrometer can easily be removed and uses with external light sources; as the halogen and Xenon light have very similar emission spectrum normalized reference spectra can be used for comparison.

First turn light on and take a “reference” (lamp) spectrum without any sample	Remove the light holder and put some “blu-tack” to level the sample with the entrance port
Place the sample area over the entrance port	Shine the GL Xenon Flashlight from above onto the sample and observe the spectral graph

If you see the 690 nm peak the jadeite is naturally coloured; if the 690nm peak is missing the jadeite is either dyed or treated. The Chelsea filter reaction may indicate presence of dye.

Identification of dyed jadeite (PDF) from The Journal of Gemmology, 2009, 31(5-8)

The GL Gem Raman PL532 is needed to confirm polymer impregnated jadeite.

Advanced Gem Identification

This 4-day workshop is offered as part of the A.G. Professional Development Program (AG-PDP). Also recommended as an upgrade course for practising gemmologists.

Students will learn state-of-the-art techniques (including immersion-scope, gemstone magnetism, IR-VIS-NIR and Raman spectroscopy), etc. designed to identify confidently any gemstone encountered in the market place.

Between 100 and 120 challenging gems including the most recent synthetics and treatments are available for testing.

• Fee: $ 995 includes comprehensive study guide, Gemstone Inclusion Library, use of lab equipment and study stones.
• Date: Sat – Tue, Nov 16 – 19, 10 a.m. – 4:30 p.m., Vancoucer (YVR Airport Hotel), Richmond, B.C.
• Please register by October 17, 2013

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, CVD, synthetic diamonds and many others. Gem enhancement techniques such as heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied.

Day 1: Review of gem testing instruments; introduction to advanced identification techniques using the GLGemSpec and GL Gem Raman PL532 spectrometer.

Day 2 and 3: Routine testing with microscope and selected gemmological tools to identify difficult gem materials loose and set in jewellery.

Day 4: Identification of challenging gem materials and their treatments.

GL Gem Raman Workshop

This course is recommended for future users of the GL Gem Raman PL532 system.

• Using PowerPoint presentations the development and use of Raman spectrometers is introduced.
• Procedure of proper calibration with Laser Glasses (190-548nm); learning step-by-step testing method with GLGemRaman software and searchable database.
• Practical testing of a number of interesting gem materials by the participants under supervision of the workshop facilitator.

Fee: $ 295 (limited to 4 participants. To register on-line go here.

Date: Fri, Nov 15 from 6:00 – 10:00 p.m. (4 hours), Vancoucer (YVR Airport Hotel), Richmond, B.C. Please register by October 17, 2013

Participants who purchase a GL Gem Raman PL532 within one month after the workshop will receive a $ 295 discount.

We reserve the right to cancel courses if there is insufficient enrolment; upon return of all course materials students will receive a full refund for the tuition paid but no other compensation can be offered. Please wait with travel arrangements until final confirmation.

View/Download and read carefully our refund policy (PDF).

11th International GeoRaman Conference

“The 11th International GeoRaman conference in St. Louis, June 15-19, 2014 will focus on two major aspects of laser Raman spectroscopy: (1) The most advanced technologies and instrumentation, from laboratories to a wide variety of field applications, e.g., industrial and security monitoring, geo-fields, deep ocean, and on other planets; (2) The newest applications in studying inorganic, organic, and bio-genetic materials in Earth Sciences, Planetary Sciences, Environmental Science, Forensic Science, Archaeology and Archaeometry, Gemology, and Astrobiology.”

During the Xth GeoRaman in Nancy France in June 2012 several gemmology related issues were covered and will be further addressed in St. Louis.

_________

Wolf Kuehn, B.A., M.A., Dipl.oec, F.G.A., F.G.G. – GLR&T Project Manager

© 2013 Gemlab Research & Technology, Vancouver, Canada

The name and logo GEMLAB GROUP is a registered trade mark (Registration # TMA407372 with the CIPO)

Gemlab Research & Technology.

ISSN 0846-3611 GEMMOLOGY CANADA – Wolf Kuehn, F.G.G., F.G.A., Editor

From the Editor:

Since my return from a very successful AGTA GemFair in Tucson, Arizona we have been busy shipping orders and answering questions about our courses and products. I will be present at the C.I.G. booth during the BC Gem & Mineral Show (see below).

BC Gem & Mineral Show, Abbotsford – April 11, 12 & 13

Visit us at the Ag-Rec Building, Central Fraser Valley Fairgrounds, 32470 – Haida Drive, Abbotsford, British Columbia

Petrified – Locked In Time Friday: 10:00 am – 8:00 pm Saturday: 10:00 am – 6:00 pm Sunday: 10:00 am – 5:00 pm

Admission: Adults – $6.00, Students (6 – 17) – $2.00, Under 6 – Free

At the C.I.G. booth we have our full line of gem testing tools and several new titles of gem books on display; buy at the show and save on taxes and shipping costs. The Handbook of Gemmology DVD will be available for sale.

We are also demonstrating the 2014 model of the GL Gem Raman PL532 TEC system and the GL Gem Spectrometer with an innovative attachment.

Please bring any gems or minerals for quick identification (even set in jewellery; max. 5 pieces per customer); we are particularly interested in jade, treated gemstones and diamonds of any kind (synthetic, coloured, HPHT, irradiated, etc).

Updated Webpages for Gemlab Research & Technology

Due to the increasing number of users around the world we have updated the GL R&T section of GEMOLOGY WORLD; you can reach it at www.gemlab.ws.

Cobalt doped filled Sapphire

There are GL Gem Spectrometer users in 32 countries around the world; please go to the updated section with interesting links and sample spectra. GL Gem Spectrometer

Rapid Separation of Diamond, Moissanite and Cubic Zirconia

The GL Gem Raman PL532 TEC is being used for scientific research in the Department of Earth and Environmental Sciences at the University of St Andrews, Scotland and at The Mineral Technology Center (CETEM) – a research institute of the Ministry of Science, Technology and Innovation (MCTI) in Rio de Janeiro, Brazil and by users in 15 countries around the world. GL Gem Raman PL532

Gemlab R&T Official Sponsor of 11th GeoRaman Conference

Official Sponsor of 11th GeoRaman ConferenceSt. Louis, MO, USA June 15 – 19, 2014

In the show room will be demonstrating the GL Gem Raman PL532 with new features to surpress fluorescence and share up-to-date information about detection of natural, synthetic, HPHT and CVD grown diamonds and their treatments. The use of the GL Gem Spectrometer will also be demonstrated.

The Handbook of Gemmology (eBook)

Covering all aspects of the science of gemmology and gem identification this innovative and interactive e-Book consists of 654 digitized pages and over 700 colour photographs, diagrams and illustrations in a DVD format.

A must buy for any gemmologist, student or jeweller who demands the latest technology and the most up-to-date information.

Available in .exe (Windows), .app (Mac), ePUB or Mobi file formats. Purchase your DVD ($ 49.95) on-line at Gemlab Books & Instruments.

GEM 250 Gem Identification II (Advanced)

• Course Type: Four-day/week-end practical class in major cities. Certificate after written and practical exam.
• Prerequisite: “Gemmologist” certificate or similar gemmological qualification.
• Fee: $ 995 ($ 200 exam fee for A.G. Diploma not included); comprehensive study guide, Gemstone Inclusion Library, use of lab equipment and study stones.
• Date/Location: Sat – Tue, May 31 – June 4, 10 a.m. – 4:30 p.m., Vancoucer (YVR) Airport Hotel (special room rate), Richmond, B.C.); spring exam day: Wednesday, May 21

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, CVD, synthetic diamonds and many others. Gem enhancement techniques such as heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied. Hands-on exercises with our in-house developed GL Gem Spectrometer and GL Gem Raman system. Practising gemmologists may use this lab class to up-grade their skills.

Day 1: Review of gem testing instruments; introduction to advanced identification techniques using the GLGemSpec and GL Gem Raman PL532 spectrometer.

Day 2 and 3: Routine testing with microscope and selected gemmological tools to identify difficult gem materials loose and set in jewellery.

Day 4: Identification of challenging gem materials and their treatment with guest speaker covering the following diamond topics:

Diamond Types, Causes of Colour in Natural Diamonds, Chameleon Diamonds, HPHT-grown Diamonds, CVD-grown Diamonds, Testing and Identification Methods for Lab-grown Diamonds (UV lamp, microscope, UV-VIS-NIR, FTIR, Raman and PL spectrometers, XRF, etc), Clarity Treatments (Fracture Filling, Traditional Lasering, KM Laser Drilling), Colour Treatments (Coating, Irradiation, Annealing, HPHT, Combination Treatments)

For more Info please call: 604-530-8569

From the editor As we are approaching the busy months of this year just a few reminders: There are few places left during our Spring 2014 PDP (Professional Development Program) at the Sandman Signature Hotel – Vancouver Airport, May 31 – June 3. More info here. The program for the 11th International GeoRaman Conference (June 15 – 19) in St. Louis, MO USA has been published; download program (PDF file which contain links to abstracts). Please read our abstract (PDF, 356 KB).

GL Gem Spectrometer and GL Gem Raman Workshops

For present and interested future users of our advanced gem testing instruments we offer a free 3-hour review and hands-on session during the Spring 2014 Workshops on Tuesday, June 3 from 2:00 – 5:00 p.m.; the workshop is limited to 5 participants. Please contact us at to reserve your space.

We also have an advanced 3 1/2 hour workshop scheduled for Tuesday, June 3, 2014 from 6:00 – 9:30 p.m.; please register on-line by May 20.

GL Gem Raman PL 532 Upgrade

After successful testing of a protoype we have implemented the GL Gem Raman Band Pass Filter (GLBPF) for suppression of fluorescence in Raman mode. It consists of a holder with a dielectric filter which is inserted into the GL Gem Raman case when needed. This simple solution allows the upgrade of all GL Gem Raman units previously sold for a reasonable price (dielectric filters are not inexpensive!); all users will be contacted when the filter assemblies become available (in early June 2014).

The official introduction of the the upgraded GL Gem Raman PL532 TEC (which will be slightly lighter weighing less than 8 kgs) will take place at the GeoRaman Conference (June 15 – 19) in St. Louis, MO USA; as an official sponsor of this event we have a display booth and will be demonstrating the new GL Gem Raman PL532 TEC in the 2014 GeoRaman Exhibition Hall.

After band pass filter for fluorescence suppression

Band pass filters are used in more expensive commercial Raman systems in a number of applications. The introduction of a suitable band pass filter for suppression of fluorescence will greatly improve the detection of Raman signals when previously overwhelmed by fluorescence. We received surprisingly good results with spinels, rubies and sapphires, emeralds and other gemstones affected by fluorescence. In many cases valuable Raman information could be obtained to positively identify the sample in the RRUFF database. However, very strongly fluorescent materials such as synthetic flame fusion ruby could not be identified; for these materials a UV laser in a gated system will be necessary.

The filter assembly can also be used with other filters. As we are able to produce the filter assembly in larger quantities the price of the complete GL Gem Raman PL 532 TEC system has not changed and will be under US$ 8,500 (Can$ 9,300, EUR 6.200). More info about the GL Gem Raman PL532 here.

New Advisor to the GLR&T Team

We welcome J M Dereppe, Ph.D. (Professor Emeritus, Physical Chemistry Department), University of Louvain, Belgium to the Gemlab R&T Development and Support Team. Jean-Marie is running his own research lab and is an experienced spectroscopist who purchased the GL Gem Raman PL532 TEC last year; he is also our European contact person.

Jean-Marie’s work was was crucial in finding a solution to overcoming the fluorescence problems common in Raman spectroscopy. After testing a number of filters he presented me with the idea of a bandpass filter which we now include in all new GL Gem Raman units as the “GL Gem Raman Band Pass Filter (GLBPF) for suppression of fluorescence in Raman mode”.

Articles about Testing HPHT Reated and CVD Grown Diamonds

We were able to test a number of diamond samples and the work is still ongoing (and probablay will for a while). Until now there is no 100% answer as to the type or combination of treatments used on synthetic diamonds (either HPHT or CVD grown); as these materials will become more common in the near future scientist struggle to come up with solutions. As a start an excellent scientific book is by “Inga A. Dobrinets, Victor G. Vins, Alexander M. Zaitsev (2013) HPHT-treated Diamonds”; sample pages can be downloaded from here.

Personally I would be cautious with all devices claiming 100% reliability and repeatability based on a large reference base: only one sample which has not been properly identified will make the whole database useless.

I believe there will be several approaches in the future with analysis of photolouminescence features perhaps the most promising. In this context the PL feature of the GL Gem Raman PL532 will be very useful in future research; the state of the art will be presented during our poster session at the GeoRaman 2014 conference. Below one example of our findings:

Raman PL spectrum (room temp.) indicating HPHT treatment in synth. diamond

The graph above left illustrates a synthetic HPHT treated diamond (non CVD) with a nitrogen-vacancy defect at 637 nm; it also shows the surpression of the 558, 566 and 576nm bands which usually indicate an untreated diamond if the 637 nm peak is missing as well.

Strong silicon-vacancy peak at about 737nm may indicate CVD (chemical vapour deposition) grown synthetic diamond; there are natural diamonds with similar features but they can be recognized by their inclusions. However, the detection of the SiV^– optical center at 736.6/736.9 nm SHOULD NOT be considered proof of CVD synthesis (see recent article in Gems & Gemology, Spring 2014); more research is necessary.

The analysis of Gr1 and SiV centres in CVD-grown yellow diamonds and the comparison with existing published data indicate that other impurities like Xe, Ni or Cr may produce other colours as well; see “Contributions to Gemology #14 (2014) New Generation of Synthetic Diamonds Reaches the Market, 41 – 55″ published by GRS Gemresearch Swisslab.

Exotic Gems, Volume 3 by Renee Newman

How to Identify, Evaluate, Select and Care For Matrix Opal, Fire Agate , Blue Chalcedony, Rubellite, Indicolite, Paraiba and Other Tourmalines. This book and other volumes can be purchased at our Gemlab Books on-line store.

I would like to thank Renee for the authographed copy she presented me during the last AGTA Gem Show in Tucson, Arizona; as always a solid work with lots of beautiful images.

I want to thank the organizers and helpers of GeoRaman 2014 for a memorable week in St. Louis, MO.

Please note that I will be away from the office from August 24 until September 17 while travelling in Europe.

For November several conferences/workshops are planned for Brazil including a one week seminar/field trip to the amethyst mines in Rio Grande do Sul (Porto Alegre). Please contact me regarding these events.

11th International GeoRaman Conference

GL R&T was a sponsor of this well attended conference and had a display booth demonstrating the GL Gem Raman PL532 TEC and the GL Gem Spectrometers. Several researchers were impressed by their performance and versatility and are considering to purchase the Raman unit as a teaching instrument in geoscience classes.

Our poster “Raman and Photoluminescence Spectroscopy in Mineral Identification” for GeoRaman 2014 was well received.

Download from http://tinyurl.com/p8aqkj6 (PDF, 856 KB); the full program (PDF) with links to abstracts can be accessed here.

Of particular interest were the following contributions:

Study of the Composition of Amphiboles in the Tremolite — Ferro-Actinolite Series by Micro-Raman and SEM-EDXS (PDF) by researchers of the University of Parma, Italy, Physics and Earth Sciences Department. Several co-authors dropped by the GL R&T booth and explained their findings with a sample of nephrite using the extended range of GL Gem Raman PL 532.

Machine Learning Tools for Mineral Recognition and Classification from Raman Spectroscopy (PDF) by researchers from the School of Computer Science, University of Massachusetts, USA

Identification of CVD Synthetic Gem Diamond Using Raman Spectroscopy (PDF) by W. Wang, GIA, New York, USA

A special session in the Washington University’s Imaging lab was offered to a small group of participants. Go to GLGemRaman Facebook Photo gallery for more information.

The next GeoRaman XII will be held in Novosibirsk, Russia in 2016.

GL R&T Bronze Sponsor at the 4th International Gem and Jewelery Conference (GIT 2014 )

We are getting ready for the next conference. GLR&T is Official Sponsor with an exhibition booth at the 4th International Gem and Jewelry Conference in Chiang Mai, Thailand Dec. 8 – 9, 2014 More info http://www.git2014.com/index.php

GL Gem Raman PL 532 Demo Unit FOR SALE

We have a GL Gem Raman PL 532 demo unit (without TEC) for sale. This instrument with its extended range has been upgraded and equipped with the GLBPF (see band-pass filter upgrade) and is ideal for a small laboratory or as a teaching instrument in a college or university.

Handbook of Gemmology DVD (second edition)

We have the new 2014 DVD version available for sale in our on-line bookstore.

American Cut the First 100 years

We received from the GIA Bookstore a complementary copy of this excellent treatise by Al Gilbertson, G.G. “Have you ever looked at a beautifully designed and finely crafted piece of antique jewelry and wondered why the diamonds look so different than the ones in modern jewelry?”

This book chronicles the evolution of what we refer to as the Ideal Cut from its earliest beginnings. It is still available from Amazon.

GEM 250 Workshops scheduled for September

This advanced workshop will be offered in Nanaimo, BC from Saturday – Tuesday, September 27 – 30.

Students in the Fine Jewellery Expert (F.J.E.) Program can complete their practical course-work for GEM 150 Gem Identification I; please contact us at 604-530-8569 for more information.

The advanced course GEM 250 will cover the practice and use of the GL Gem Spectrometer and the GL Gem Raman PL 532.

For present and future users we recommend the evening workshop GEM 270.

_________

Wolf Kuehn, B.A., M.A., Dipl.oec, F.G.A., F.G.G. – GLR&T Project Manager

© 2014 Gemlab Research & Technology, Vancouver, Canada

ISSN 0846-3611 GEMMOLOGY CANADA – Wolf Kuehn, F.G.G., F.G.A., Editor

From the Editor:

As last year I spent 10 days mountaineering in the Dolomites mountains in South Tyrol, Italy. The weather was not the best with daily thunderstorms as Europe had probably one of the worst summers. This time I was interested in the area around the Falzarego Pass (Passo di Falzarego) which was the object of heavy combat in World War I. I hiked a trail secured with steel ropes and bridges up to the summit of the  Lagazuoi (2762 m) and could only imagine the terrible sacrifices the parties involved made. The tunnel that the Italians built under the Austrian lines is open to the public.

Dolomites, South Tyrol

Trail to Lagazuoi (2762 m)

Refugio Nuvolau (2575 m)

Exhibitor at the 2014 GSA Meeting in Vancouver, B.C. (19–22 October 2014)

I would like to invite you to the GSA2014 meeting (October 19 – 22) in Vancouver, B.C. which will attract over 7,000 geoscientists from around the world.

Please download and print out your VIP pass which will allow a one time entrance into the exhibit hall.

The Canadian Institute of Gemmology (C.I.G.) and Gemlab Research & Technology (GLR&T) will be exhibiting at booth #552 (next to Networking Lounge) at the Vancouver Convention Centre, 1055 Canada Place during the Geological Society of America annual meeting (GSA 2014).

“Discover new science in the 247 topical sessions, trips, courses, and events. GSA is where geoscience professionals come to get engaged, get educated, get inspired, and enjoy each moment.”

There are many gemmology related events on Monday, October 20.

GL Analyzer PL405 Kit

On the facebook page for the GL Gem Spectrometer we introduced – for those who do not want to assemble a similar kit on their own – a complete package which includes proper laser safety goggles. 

The GL Analyzer PL405 kit converts the GL Gem Spectrometer into a “poor man’s version” of a PL spectrometer as found in the GL Gem Raman PL532 . The results for obtaining luminescence spectra from ruby, sapphire, emerald, spinel, alexandrite, etc. are very good.

The GL Gem Spectrometer in PL mode can be used to identify gems and minerals by their chromophores; there is also great potential for diamond characterization. It will detect polymer treatment in jadeite (see below).

Detection of polymer treated jadeite with the GL Gem Spectrometer

The GL Gem Spectrometer™ is very efficient in detecting whether green jadeite has been treated or not.

With a blue laser (405 nm) excitation source (GL Analyzer PL405 Kit recommended) a strong luminescence band appears in the green wavelength range of polymer treated jadeite which is absent in untreated green jadeite.

You can use your own blue laser pointer (use safety goggles!) to test your green jadeite samples; detailed instructions are in the user section.

Download jadeite info sheet (PDF, 540KB).

For your own protection always use laser safety goggles when operating any type of laser equipment.

Workshops in Brazil

I have planned several workshops and presentations both about advanced spectroscopy and visits to gem mining areas in Colombia, Australia and Myanmar/Thailand/Cambodia in Sao Paulo, Porto Alegre and Rio de Janeiro, Brazil; if you want to participate please contact me or the institutions.

Sao Paulo, October 29 at IBGM

Porto Alegre, November 4 – 5 at Instituto de Geociências – UFRGS followed by a field trip to mines near Soledade.

Rio de Janeiro, November 10 – 12 at CETEM

Gemlab R&T Official Sponsor of GIT 2014, Chiang Mai, Thailand

We have submitted an extended abstract for a poster session, download  “Raman and Photoluminescence Spectroscopy in Gem Identification” (PDF), 358 kB

Official Sponsor 4th International Gem and Jewelry Conference Chiang Mai, Thailand Dec. 8 – 9, 2014

In our booth will be releasing and demonstrating the new GL Gem Spectrometer NIR PL405.

GL Gem Spectrometer NIR PL405 RELEASE SOON

Planned for release during the 4th International Gem and Jewelry Conference (GIT2014)  in Chiang Mai, Thailand Dec. 8 – 9, 2014 the GL Gem Spectrometer NIR PL405 is a dual purpose spectrometer for photoluminescence (PL) spectroscopy; it can be used for VIS-NIR spectroscopy (550 – 1,000 nm) as well (the GL Halogen Gem Holder is included).

The spectrometer has a higher resolution than our regular unit, a Long Wave Pass Filter (LWPF) and is optimized for the NIR range.

GL Gem Spectrometer NIR PL405

It allows identification of many gemstones such as ruby, sapphire, emerald, spinel, alexandrite, etc. based on their PL response and also has great potential for diamond characterization. It can be used in addition to the GL Gem Spectrometer or on its own as a dedicated PL and transmission spectrometer as many gem materials have important features in the VIS-NIR  range.

For instance it will identify untreated or treated jadeite (it will not show the PL band for polymer treated jade though due to the built-in LWP filter). Diamond irradiation, copper content in “Paraiba” tourmaline will be visible in the spectrum. First studies indicate that heat treatments such as in red spinel can be determined.

In PL mode it is almost as sensitive as the GL Gem Raman PL532 and can serve as a low-cost PL spectrometer.

We will have a display booth at  GIT2014; more info http://www.git2014.com/index.php

GL Gem Raman PL 532 Demo Unit FOR SALE

We still have a GL Gem Raman PL 532 demo unit (without TEC) for sale. This instrument with its extended range has been upgraded and equipped with the GLBPF (see band-pass filter upgrade) and is ideal for a small laboratory or as a teaching instrument in a college or university. 

Handbook of Gemmology DVD (second edition)

We have the new 2014 DVD version available for sale in our on-line bookstore.

AGTA GemFair Tucson 2015

ISSN 0846-3611 GEMMOLOGY CANADA – Wolf Kuehn, F.G.G., F.G.A., Editor

From the Editor:

After a busy fall season the year 2014 is coming to a close. With several talks and workshops in Sao Paulo, Porto Alegre and Rio de Janeiro my Brazil trip ended with an exciting excursion to the Ametista de Sul mining are. I also had the opportunity to visit one of the destinations  on my wish list: Patagonia, Argentine with 2 days of trekking in the Monte Fitz Roy (3,405 m) range . I am writing this while still in Thailand after attending GIT2014 Conference in Chiang Mai and “recovering” from the post-conference journey to sapphire mines and a trip to the Golden Triangle bordering Burma and Laos.

On January 17, 2015 I will be at the FEEG Symposium in Brussels with a presentation; next is Tucson for the annual AGTA GemFair from February 3 – 8. Early in the summer planned is the first Mediterranean Gem Conference in Athens, June 17 and 18.

I wish you all a Healthy and Happy New Year 2015. 

Brazil Tour 2015

During my annual visit to South America I  could meet many old friends;  all the Raman units installed In Brazil last year have been performing well. The itinerary included Sao Paulo, October 29 at IBGM, Porto Alegre, November 4 – 5 at Instituto de Geociências – UFRGS followed by a field trip and Rio de Janeiro, November 10 – 12 at CETEM.

Members of IBGM and University of Sao Paulo attend “Spectrometer Workshop”.

The conference was well organized and a great success with many attendees visiting the GL R&T booth where the new GL Gem Spectrometer NIR PL405 was on display; download our poster “Raman and Photoluminescence Spectroscopy in Mineral Identification (PDF, 856 KB)”

You can also download the Proceedings with all abstracts from here (PDF). Following are a few images from the Facebook page of The Gem and Jewelry Institute of Thailand.

As always both the pre- and after-conference excursions were lots of fun and interesting. We are already looking forward to participating in GIT 2016.

FEEG Symposium Brussels, Belgium, January 17

The Societe Belge de Gemmologie of Brussels (SBG) has the pleasure to invite you to the 17th FEEG Symposium in Brussels (Belgium) that will be held on the 17th of January 2015 in the “Royal Windsor Hotel”. For more information go to the FEEG Symposium website. My presentation will demonstrate the the usefulness of Raman and introduce low cost photoluminescence (PL) spectrometry for gemmologists using blue (405 nm) laser excitation.  Gemlab Research & Technology has sponsored the event and will have a demonstration table for the GL Gem Raman PL532 TEC system.

Mediterranean Gemmological and Jewellery Conference June 27/28

The National Association of Jewelry Appraisers (NAJA) has posted a first announcement of this important conference on their Facebook page. You can download the tentative program from here (PDF). The GemConference website with registration page will be up soon.

News from Gemlab Research & Technology

GL Gem Spectrometer NIR PL405 available now.

GL Analyzer PL405 Kit

Now available  – for those who do not want to assemble a similar kit on their own – a complete package which includes proper laser safety goggles.  The GL Analyzer PL405 kit converts the GL Gem Spectrometer into a “poor man’s version” of a PL spectrometer as found in the GL Gem Raman PL532 system . The results for obtaining luminescence spectra from ruby, sapphire, emerald, spinel, alexandrite, etc. are very good. It has great potential for diamond characterization; work with a liquid nitrogen (LN) attachment has been started.

Upgrade for Spectrometer

All 2014 and newer models of the GL Gem Halogen Light holder mounted onto the spectrometer come with a thicker base plate which allows easier positioning of the sample on the Teflon disk (it cannot not slip off ). This upgrade kit may be of interest to purchasers of the GL Gem Spectrometer prior to 2014. The upgrade kit with all necessary parts is available for $ 50 (free shipping).

Calibration

After air travel or strong temperature changes I noticed that the  GL Gem Spectrometer may become slightly out of calibration. Though not a critical problem users should check the accuracy of their instrument with the supplied synthetic ruby. A service program can be downloaded from the GLGemSpec user section to re-calibrate the instrument quickly and safely.

GL Gem Raman PL532 Laser Options

We decided to offer a 200 mW and 300 mW laser option for the GL Gem Raman system. We found that some users did not take the warning seriously to use care when dealing with amber and pearls. We recommend the 200 mW option for appraisal work and gem labs and the 300 mW laser for testing minerals and samples with rough surfaces.

GLBPF (filter) Upgrade

As a reminder the GL Gem Raman Band Pass Filter (GLBPF) for suppression of fluorescence in Raman mode is now available as a kit. It consists of a holder with a dielectric filter which is inserted into the GL Gem Raman case when needed. This simple solution allows the upgrade of all GL Gem Raman units previously sold for a reasonable price (dielectric filters are not inexpensive!).

GL Gem Raman users should note that the TEC option is beneficial only for exposure times over 1,000 ms; for regular work with gemstones it does not need to be turned on.

Raman Spectrometer Setup and Tutorial

We are providing this  important service package for purchasers of the GL Gem Raman PL532 system who may need assistance in setting up and operating the Raman spectrometer.

The cost of this service is based on average travelling expenses including airfare, accommodation and a reasonable amount of remuneration for the tutor/instructor.

The total cost will include a six (6) hour tutorial which can be attended by up to 5 persons; additional time can be added at $ 75 hourly rate.

Please contact us for an estimate. This service is also available to previous buyers of the GL Gem Raman and GL Gem Spectrometer.

For Europe, South America and Far Eastern countries the total price will be around US$ 2,000; for North America US$ 1,000 (assuming fuel prices remain low).

AGTA GemFair Tucson 2015

ISSN 0846-3611 GEMMOLOGY CANADA – Wolf Kuehn, F.G.G., F.G.A., Editor

From the Editor:

The New Year 2015 started right away with the 17th FEEG Symposium in Brussels (Belgium); it was held  in the “Royal Windsor Hotel” on the 17th of January .I had the pleasure to talk to many European colleagues some of whom I met again in Tucson, Arizona  two weeks later.

After the conference I spent a week skiing near St. Anton am Arlberg  in Austria where the Haute-Volée (High Society) spends their winter holidays; less than 70 km away in Faschina-Fontanella I had the lifts to myself and spend less than US$ 80 per night (breakfast and dinner included) at the Hotel Alphof  which I can highly recommend.

The  AGTA Gemfair in Tucson, February 3 – 8 was better attended than in past years; however, the high value of the US$ limited the buying power of foreign visitors. We had many old friends from around the world drop by the C.I.G. booth and have a look at the new GL Gem Spectrometer NIR PL405 unit.

BC Gem Show, Abbotsford BC, April 10, 11 & 12, 2015

Many Club Displays, Demonstrations, Grab Bags, Children’s Creative Workshop, Gold Panning & Door Prizes. Friday: 10:00am – 8:00pm Saturday: 10:00am – 6:00pm Sunday: 10:00am – 5:00pm

The  GL Gem Raman PL532 will be demonstrated; like last year we will test gems and minerals during the show (2 items per visitor) with our advanced spectrometer equipment (only oral opinions will be given). We also have books, basic gem testing equipment, study stones and some used items, etc. for sale.

A new Vancouver Gem & Mineral Show is scheduled for later in the summer (August 14 – 16) which we will also attend.

Photoatlas of Gemstone Spectra for Gemology Students

This new book with gemstone spectra has been published by Richard D. Armstrong, RGA, GG, GP.Please read a review by the The Practical Gemologist blog; we highly recommend this valuable reference book.

Mark your calendar for these upcoming gem conference

Mediterranean Gemmological and Jewellery Conference

Athens, Greece, June 27th and 28th, 2015Take in a conference of incomparable atmosphere and learn from some of the world’s top independent lab gemmologists, appraisers and gem experts who are highly trained and equipped with the best tools for testing, grading and appraising.

We are getting ready for this exciting meeting; the GemConference website with registration page is now up. More details to follow soon.

News from Gemlab Research & Technology

GL Gem Spectrometer™ – 2015 edition

Comparison of various rubies

Pink Diamond, HPHT treated, irradiated (405 nm laser excitation, room temperature)

Many GL Gem Spectrometer users have been asking whether their instrument could be used with UV LEDs or inexpensive laser pens. Using UV excitation sources not only requires solarization-resistant fibers and  protective eye glasses (also important for lasers) but could cause diffraction problems in the spectrometer. Former spectrometer users (up to model 2014) can purchase the  GL Analyzer PL405 Kit  which includes a filter to eliminate some of these effects caused by the blue laser (405nm).

We have now installed a diffraction order sorting filter for elimination of second order effects; this will work with SW and LW UV light sources and lasers. For the 2015 models we offer a GL Analyzer PL 405/GL Xenon Flashlight combo for the same prize (Long Wave Pass Filter not included as it is not necessary in the new model).

GL Analyzer PL405 Kit again in stock

Now available  – for GL Gem Spectrometer (up to model 2014) owners who do not want to assemble a similar kit on their own – a complete package which includes proper laser safety goggles.The GL Analyzer PL405 kit converts the GL Gem Spectrometer into a “poor man’s version” of a PL spectrometer as found in the GL Gem Raman PL532 system .

The GL Gem Spectrometer in PL mode can be used to identify gems and minerals by their chromophores; there is also great potential for diamond characterization. It will detect the GR1 center for irradiated diamonds, the Si center often seen in CVD grown diamonds (in some cases without LN cooling) and polymer treatment in jadeite.

Raman Spectrometer Setup and Tutorial

We are providing this  important service package for purchasers of the GL Gem Raman PL532 system who may need assistance in setting up and operating the Raman spectrometer.

The cost of this service is based on average travelling expenses including airfare, accommodation and a reasonable amount of remuneration for the tutor/instructor.

The total cost will include a six (6) hour tutorial which can be attended by up to 5 persons; additional time can be added at $ 75 hourly rate.

Please contact us for an estimate or if you want to incorporate this workshop into your conference program, meeting, etc. This service is also available to previous buyers of the GL Gem Raman and GL Gem Spectrometer.

For Europe, South America and Far Eastern countries the total price will be around US$ 2,000; for North America US$ 1,000 (assuming fuel prices remain low).

Friday, Nov. 13/14, 2015 The fall meeting of members of the “Gem Connoisseur Club”, students and friends of the Canadian Institute of Gemmology; all Accredited Gemmologists (C.I.G.) and former C.I.G. students are welcome.

There will be several workshops available. Program T.B.A. soon.

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ISSN 0846-3611 GEMMOLOGY CANADA – Wolf Kuehn, F.G.G., F.G.A.(diploma holder since 1985), Editor

From the Editor:

The summer is in full swing with record high temperatures; I wish everyone a relaxing holiday season.

The 1st Mediterranean Gem and Jewellery Conference in Athens was a great success with several diamond manufacturers in attendance. I will report about interesting contributions in the next Gemlab Newsletter.

Of great concern to me is an ongoing campaign by a Facebook group  attacking the current administration of Gem-A; the matter is now out in the public and should be further investigated (see below). For the upcoming AGM on July 29 I urge all FGAs with voting rights to elect Trustees who will serve the Association in a competent and professional manner.

Please mark August 14 – 16 for the Vancouver Gem & Mineral Show; the Canadian Institute of Gemmology and Gemlab Research & Technology will exhibit there and offer gem identification services demonstrating our newest GL Gem Spectrometer,  GL Analyzer PL405 Kit and the GL Gem Raman PL532 .

Gem-A Annual General Meeting, July 29

For some time developments at Gem-A have given rise to concern; more recently a Facebook group has started publicly slandering existing Gem-A board members with the intent to bring the whole board of trustees down and replace it with their own nominees. [Editor: many posts at the offensive ‘Friends of Gem-A’ Facebook page have been selectively removed; however, carefully evaluate the posters who are either nominees or have endorsed them]

I am asking all F.G.A.s to make their voices heard and vote in the upcoming AGM; members in good standing should soon be receiving a list with nominees and instructions of how to vote by proxy. Please check and question the backgrounds, agendas, competence in UK association law and potential conflict of interest (Gem-A is the sole UK agent for “nominee’s” company, etc.) of those named for election by the above Facebook group: Ronnie Bauer, Alberto Scarani, Guy Clutterbuck, Michael Hoare, John Bradshaw, Kathryn Bonanno and Greg Valerio. Do not believe anything on mere hearsay!

On another matter: For some time Gem-A has started to bestow Honorary Fellowships to members of the trade who made major contributions to gemmology. Unfortunately a number of individuals awarded with the F.G.A. (Hon.) designation do not display this fact with their credentials; I consider this practice unprofessional and damaging to the standing and reputation of all FGA diploma holders who have EARNED this prestigious membership designation. In the past candidates had to pass rigorous and challenging examinations before being admitted into the Association as a Fellow.

Further Information about iPetition

I agree fully with Dr. Jack Ogden, previous CEO of Gem-A  in his response to allegations by the above Facebook group (Note: it was first published for Gem-A members on Gem-Talk but has since been released to the public by Sara Abey):

Dear all,

Like most of you I await details of the AGM (soon please) and hope to hear what has really been happening, as much as any legal processes allow.

Also like many of you I despair at the appalling way this whole campaign in support of the CEO has been managed. It seems to have started with the iPetition and gone downhill since then. The Petition itself was so poorly thought-out that it seems extraordinary that it swept up so many in its wake.

Let’s start with the iPetition, with comments

• Postponement of the AGM without explanation or an alternative date

If there is any aspect of the finances that the Board considers prevents them from ‘signing off’ the Annual Accounts, the AGM has to be postponed. Straightforward. Happened a few years ago with no outcry.

• All staff members instructed to have no contact with the CEO, without explanation.

If there is a potential disciplinary action in the offing, this is hardly surprising.

• Withdrawal of Corporate Social Responsibility programme from recent prospectus and website, without explanation (note CSR/ ethics and sustainability are core to the Charity’s Aims and Objectives …. )

If the Board considers that a CSR programme is not appropriate, then this is one way of dealing with it. Maybe a bit unusual? Obviously one has to ask whether the CEO had not stopped it sooner despite requests from the Board to do so? The Petition shouldn’t have quoted that Charity Commission stuff – I wrote it and the intent was simply to say the Gem-A had to retain a watching brief on what was happening in the whole ethical field. I never considered it right for a Gemmological education body to provide courses in the area. Perhaps better questions from Members are whether Greg Valerio was being paid by Gem-A to be involved in this (if so I’d understand him being peeved) and why the CEO hasn’t completed the required Charity Return forms for 2011, 2012 and 2013 (the requirement was scrapped in 2014). Transparency please.

• Alleged resignation of the Chairman, without formal announcement or explanation

The Chairman is and has always been appointed by the Board at a ballot at a Board meeting. The Members have no say. In theory the Board could appoint a different Chair for every meeting. Chairs come and go (for various reasons) and in the past no communication was issued unless some thanks were later expressed in Gems and Jewellery magazine.

• Board has been non-responsive to formal enquiries and concerns, resulting in a lack of transparency and communication

Can’t comment on this, but if at heart there is some potential disciplinary action (or investigation to see if one was needed) discretion is unavoidable.

• Lack of treasurer in recent months

Really? A ‘Treasurer’ in an organisation with a CEO and elected Board is viewed as a vestigial organ – totally unnecessary. There never was one my time as CEO (9 years) and if they did appoint one, I imagine a CEO would be deeply insulted. There is an Audit Committee which includes at least one Board member and the independent Auditors for the Annual Accounts.

• Refusal by the Board to sign Conflict of Interest forms

All of the Board? This is a bit of a side-show anyway, conflict of interest forms are seemingly not a necessity, even just having a Conflicts of Interest policy is optional (according to the Charity Commission). The provisions in the Gem-A Memorandum and Articles of Association and Charity regulations regarding Board Members’ conflicts of interest are sufficiently robust to make individual forms redundant. This is not one-sided, the Charity Commission recommends similar Conflict of Interest considerations for the CEO of an organisation such as Gem-A.

• Staff have repeatedly asked for decisions to be explained and evidenced in writing and have been repeatedly ignored. Board have dictated action without due explanation.

Doesn’t sound great… But maybe we should hear the staff’s point of view in due course (in the spirit of transparency again). In the absence of a CEO in an organisation like Gem-A it is traditional for the Chairman to take over.

• Coercion of staff members

Ditto – but I remind staff that ‘whistle-blowing’ is protected under UK employment law. I assume the Petition implies coercion by the Board, not by the CEO?

• The dismissal of the Human Resources manager. The replacement (brought in by the Board) has not been properly introduced to all staff.

Gem-A’s Board started outsourcing HR to a specialist consultancy company many years ago who allocated a guy to it. Of necessity this person develops a very close working relationship, even friendship, with the CEOs since there are many sensitive issues they have to handle together. If and when a problem between Board and CEO arises, a change of HR person is essential if the process is to be seen as unbiased and transparent. Introducing a consultant to all the staff may be a nicety, but with the apparently serious stuff going on neglecting this is hardly a major crime.

So, in all, a bit of a non-starter…

I must admit that I initially assumed that the CEO was behind this ‘revolt’, trying to get friends onto the Board to change the balance of power to best ensure he can remain in place, but the seeming lack of familiarity with Gem-A’s working, Charity requirements and Company law suggest not. If he had, I could understand him wanting support, but it is such a shame that it has all degenerated into an unethical, mud-slinging, ill-informed campaign being played out in public.

One other point, having non-UK Board members for a UK charity is not contrary to Charity Commission guidelines, but they have to be in a minority. Having a handful of non-UK board members is a good idea – it has been raised in the past – but it would be a new thing for Gem-A and raises issues that should have been formally settled in advance. For example, Gem-A pays Board members’ travel expenses to meetings and if we pay one to come from Edinburgh why not Hong Kong? Current individuals may well waive claiming such costs, but procedures need to be properly agreed by Members and documented for the future. Before (or concurrent) with nominating non-UK Board members, the nominators or the CEO might have usefully proposed relevant new clauses for the Gem-A Governing documents so Members understand the ramifications of non-UK Boards members and any potential for future complications reduced. One such clause would be to cover what happens if elections (or Board resignations) result in non-UK Board members no longer being in the minority.

I’m not arguing for one side or the other here, I’d hate to be in James’s position, but I do urge Members and new nominees to the Board not to be caught up in a band-wagon revolt against the present Board that if not intelligently handled could derail Gem-A for a generation.

I’m reminded of Monty Python’s ‘Life of Brian’ where the Popular Liberation Front of Judea demanded nothing less than the complete dismantlement of the Roman Empire.

Dr Jack Ogden FSA

Friday, Nov. 13, 2015 The fall meeting of members of the “Gem Connoisseur Club”, students and friends of the Canadian Institute of Gemmology; all Accredited Gemmologists (C.I.G.) and former C.I.G. students are welcome.  Program TBA soon.

Advanced Gem Identification (GEM 250)

The following course is an up-date course  for A.G. (C.I.G.) diploma holders and graduates of other schools and institutes; it is recommended as an introduction to the use of advanced gem testing equipment.

In this advanced course students will learn state-of-the-art techniques (including immersion-scope, gemstone magnetism, IR-VIS-NIR and Raman spectroscopy), etc. designed to identify confidently any gemstone encountered in the market place. Between 100 and 120 challenging gems including the most recent synthetics and treatments are available for testing.

• Fee: $ 995 includes comprehensive study guide, Gemstone Inclusion Library, use of lab equipment and study stones. Recommended optional study materials: Gemology by Peter Read, Handbook of Gemmology 2015 (3rd edition)
• Date: Sat – Tue, November 14 – 17, 2015, 9:30 a.m. – 4:30 p.m.
• Location: Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate). Please register by October 15, 2015
• Prerequisites: A.G. (C.I.G.) diploma or equivalent (please contact us)

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, synthetic CVD and HPHT grown and treated diamonds and many others. Gem enhancement techniques such as heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied.

Hands-on exercises with our portable in-house developed GL Gem Spectrometer and GL Gem Raman system. Practicing gemmologists may use this lab class to up-grade their skills.

Please register here. View/Download and read carefully our refund policy (PDF).

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Man-made diamonds are fascinating objects. There are probably more scientists involved in diamond research than for all other gemstones combined. The Athens gem conference had several diamond growers in attendance and the latest information about methods to screen and detect synthetic diamonds were shared.

I received encouraging responses from several FGAs about my concerns over the misuse of the FGA designation by non-diploma holders (as expressed in the CIGem News  Summer 2015 newsletter). We will obtain clarification about the proper use of the F.G.A. (Hon) designation after the new Council is in place.

Again I urge all Gem-A members to cast their vote in the upcoming election for Trustees. The choice is between a trade association headed by  “Seven Disgruntled Members”  or candidates who have and will support the high educational standards Gem-A has been known for decades and are able to run a modern UK professional association.

Wolf Kuehn, F.G.A. (diploma holder since 1985), F.G.G.

Upcoming events: Vancouver Gem & Mineral Show, Aug 14 -16 and GEM 250 Advanced Gem Identification, Nov, 14 – 17 (more info below)

How to quickly identify CVD grown diamonds

During the Athens gem conference Dr. Joe Yuan from  Taidiam Technology  described the growth and detection methods of the most recent synthetic diamond products. I tested a Taidiam CVD grown diamond in my lab with the GL Gem Spectrometer, GL Gem Raman PL532 TEC using liquid nitrogen (LN) immersion and a binocular microscope with polarizing accessory.

I found that the SiV– optical center at 737 nm as commonly seen in CVD grown synthetic diamonds appears to be unstable. Taidiam, IIa company and Apollo/SCIO may show 737 nm line (including very few natural diamonds), Element 6, Washington and Taidiam (after my own experiment by immersing it in Liquid Nitrogen as described below) have NO 737 nm peak. Dr. Yuan confirms my findings by explaining that CVD growth is dependent on conditions of quartz bell or plate, quantity of doped Si and its detection by the type and precision of spectrometer used; even the same product may give different results.

CVD grown diamonds, however, can be quickly identified with a hand spectroscope or preferably with the GL Gem Spectrometer in order to detect any “Cape lines”. If not present inspect the diamond under a microscope with crossed polarizers and look for abnormal birefringence and/or coarse parallel or crossed column lines indicating CVD.

According to Dr. Yuan “this approach is  100%” and I believe him. Please download more instructions here (PDF).

Usefulness of Liquid Nitrogen in Spectroscopy

For several days I have been testing diamond and gemstone samples immersed in LN (liquid nitrogen) to determine whether there are any benefits for users of the GL Gem Spectrometer and the GL Gem Raman PL532 TEC. The answer is: not really.

Low-cost LN setup for use with spectrometers. Always follow instructions about proper use of liquid nitrogen.

A common problem is the icing up of the used low-cost glass device causing signal loss. There is no easy solution unless someone is willing to spend a larger amount of money for a dedicated LN accessory. For that reason I believe that increasing exposure times and controlling background noise is a better alternative; TEC for the Raman spectrometer makes sense when exposure rates are higher than 1,000 ms. LN will reveal stronger PL and additional peaks not seen at room temperature and narrows spectral width which can be seen only with scientific quality spectrometers.

The following show results obtained from a Taidiam CVD grown diamond before at room temperature/during and after LN immersion.

GL Gem Raman PL532 TEC (in real time)

GL Gem Raman PL532 TEC (in real time)

The Future of Man-Made Diamonds

During the round-table discussion there were opposing views whether synthetic diamonds have a future in jewellery stores; looking back 25 years many of the diamond producers have been unsuccessful. Now with production costs coming down considerably it will be possible to produce a diamond at 1/3 price or less than its natural counterpart.  The question remains whether a young couple will accept a lab grown diamond in their engagement ring instead of the traditional solitaire. The growers are investing heavily in presses and cutting equipment; but without an effective marketing campaign to attract more jewellery buyers I am somewhat pessimistic. However, we must educate ourselves to identify these new materials for the obvious reason!

I  had a chance to briefly test the largest HPHT grown and cut 10.02-carat, E, VS1, type IIa, square, emerald-cut  stone produced by New Diamond Technology LLC  of St. Petersburg, Russia. It is certainly a spectacular piece and displayed some orange fluorescence both under the UV lamp and a strong LED light which could be an identifying feature.

Vancouver Gem & Mineral Show, August 14 – 16

Visit us a the C.I.G. (Canadian Institute of Gemmology) booth; books and small gem testing instruments will be on sale.

First annual Vancouver Gem and Mineral Show

Please bring interesting gems and minerals (2 per visitor) and have them identified with our GL Gem Raman PL532 TEC while you wait and watch.

Location: Kitsilano Rink
2690 Larch St, Vancouver, BC V6K 4K9

Friday, August 14th 2015, 12:00-8pm
Saturday, August 15th 2015, 10am-6pm
Sunday, August 16th 2015, 10am-5p
Adults: $7, Seniors/Students: $5, Children 12 and under free (with adults)

In this advanced course students will learn state-of-the-art techniques (including immersion-scope, gemstone magnetism, IR-VIS-NIR and Raman spectroscopy), etc. designed to identify confidently any gemstone encountered in the market place. Between 100 and 120 challenging gems including the most recent synthetics and treatments are available for testing. Max 5 participants.

• Fee: $ 995 includes comprehensive study guide and materials (copy of Gemstone Inclusion Library), use of lab equipment and study stones. Recommended text-book: Gemology by Peter Read. Download course flyer (PDF).
• GEM 250 – 3: Mon – Thu, November 9 – 12, 9:30 a.m. – 4:30 p.m. RESERVED
• GEM 250 – 4: Sat – Tue, November 14 – 17, 9:30 a.m. – 4:30 p.m. SPACE AVAILABLE
• Location: Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate).  Please register by October 15.
• To keep costs down no lunch or beverage services are offered, lunch break 12:30 – 1:30 p.m
• Prerequisites: A.G. (C.I.G.) diploma or equivalent (please contact us)

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, synthetic CVD and HPHT grown and treated diamonds and many others. Gem enhancement techniques such as polymer impregnation (jadeite), heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied.

Hands-on exercises with our portable in-house developed GL Gem Spectrometer and GL Gem Raman PL532 TEC system. Practicing gemmologists may use this lab class to up-grade their skills.

Please register here. View/Download and read carefully our refund policy (PDF).

GEM 270 GL Gem Spectrometer and Raman Workshop

This course is for current or future users of the GL Gem Spectrometer and GL Gem Raman system.

Using PowerPoint presentations the development and use of advanced spectrometers is introduced.
Learning step-by-step testing method for the GL Gem Spectrometer and use of the GLGemRaman software and searchable database.

Practical testing of a number of interesting gem materials by the participants under supervision of the workshop facilitator; most up-to-date information on synthetic diamonds including CVD, HPHT and irradiation treatments and their detection.
Prerequisite: previous practical experience with spectroscope/spectrometer and good understanding of advanced spectroscopy.

Presenter: Wolf Kuehn, B.A., M.A., Dipl.oec, FGA, FGG

GEM 270-3 Friday, Nov 13 from 9:00 – 1:00 p.m. (4 hours); limited to 3 participants.

GEM 270-4 Friday, Nov 13 from 2:00 – 6:00 p.m. (4 hours); limited to 3 participants. RESERVED

Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate). Please register by October 15.

Fee: $ 295 (free for purchasers of the GL Gem Spectrometer or Raman PL532 TEC*); to keep costs down no lunch or beverage services are offered.

Please wait with travel arrangements until final confirmation.

Please register here. View/Download and read carefully our refund policy (PDF).

*Participants who  will purchase the GL Gem Spectrometer or GL Gem Raman system within one month will receive a $ 295 refund/discount.

_________

Wolf Kuehn, B.A., M.A., PDP (SFU),  Dipl.oec, F.G.A., F.G.G. – GLR&T Project Manager

© 2015 Gemlab Research & Technology, Vancouver, Canada

The name and logo GEMLAB GROUP is a registered trade mark (Registration # TMA407372 with the CIPO)

Gemlab Research & Technology.

Dear C.I.G. students and friends,

Just a reminder of the following upcoming events. I hope to see many of you during the first annual Vancouver Gem Show, August 14 – 16.

Please register for the fall C.I.G. Professional Development Courses soon as the number of participants is limited (see GEM 250 Advanced Gem Identification below).

IMPORTANT: Again I urge all Gem-A members to cast their vote in the upcoming election for Trustees. The choice is between a trade association headed by  “Seven Disgruntled Members”  (also read ISG Editorial) or candidates who will support the high educational standards  of Gem-A  and are qualified to run a modern UK professional association. Only one candidate is a Gem-A diploma holder; Ronnie Bauer FGA has never written a Gem-A examination!

Wolf Kuehn, F.G.A. (diploma holder since 1985), F.G.G.

Vancouver Gem & Mineral Show, August 14 – 16

Visit us a the C.I.G. (Canadian Institute of Gemmology) booth #32; books and small gem testing instruments will be on sale. Location: Kitsilano Rink 2690 Larch St, Vancouver, BC Friday, August 14th, 12:00-8pm Saturday, August 15th, 10am-6pm Sunday, August 16th, 10am-5pm Adults: $7, Seniors/Students: $5 Children 12 and under free (with adults)

Please bring interesting gems and minerals (2 per visitor) and have them identified with our GL Gem Raman PL532 TEC while you wait and watch.

GEM 210 DIAMOND GRADING

This course is an up-date course  for A.G. (C.I.G.) diploma holders and graduates of other schools and institutes.

• Course Type: Combination of correspondence course and weekend/during week (2 1/2 days) workshop. C.I.G. DIAMOND GRADING certificate
• Prerequisite: A.G. (C.I.G.) diploma or equivalent (please contact us)
• Fee: $ 995 includes home study lessons (must be completed prior to workshop), grading projects with actual diamonds, study materials and exam fee (no HST) but does not include the textbook “Diamond Grading ABC: Handbook of Diamond Grading” by Pagel Theisen, 2007 (price $ 90)

In ten (10) assignments you learn the basic knowledge to buy, sell and evaluate diamonds effectively.

In five (5) practical sessions you grade diamonds for clarity, colour and cut (according to GIA and European (CIBJO) grading standards) including performance and device based approaches such as AGS (American Gem Society) ASET, Hearts & Arrows (Ideal Scope), Cut Advisor and others. Special procedures for assessing the quality of mounted diamonds will be shown.

Course Content: 1. Introduction to Diamond Grading 2. Determination of Colour Grades 3. Clarity Nomenclature and Grading 4. Cut and Proportions 5. Evaluation of Colour, Clarity and Cut 6. Diamond Grading Procedure 7. Representation of external and internal features 8. Practical Grading of Clarity, Colour and Cut 9.Proportionscope and Fancy Cuts 10. Grading Tools, Recutting, Diamond Imitations, HPHT Treatments, Synthetic Diamonds

IMPORTANT: The practical grading workshop must be taken during a C.I.G. scheduled class. Diamonds cannot be mailed out.

Please register here. View/Download and read carefully our refund policy (PDF).

GEM 250 Advanced Gem Identification

The following course is an up-date course  for A.G. (C.I.G.) diploma holders and graduates of other schools and institutes; it is recommended as an introduction to the use of advanced gem testing equipment.

In this advanced course students will learn state-of-the-art techniques (including immersion-scope, gemstone magnetism, IR-VIS-NIR and Raman spectroscopy), etc. designed to identify confidently any gemstone encountered in the market place. Between 100 and 120 challenging gems including the most recent synthetics and treatments are available for testing. Max 5 participants.

• Fee: $ 995 includes comprehensive study guide and materials (copy of Gemstone Inclusion Library), use of lab equipment and study stones. Recommended text-book: Gemology by Peter Read. Download course flyer (PDF).
• GEM 250 – 3: Mon – Thu, November 9 – 12, 9:30 a.m. – 4:30 p.m. RESERVED
• GEM 250 – 4: Sat – Tue, November 14 – 17, 9:30 a.m. – 4:30 p.m. SPACE AVAILABLE
• Location: Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate).  Please register by October 15, 2015
• To keep costs down no lunch or beverage services are offered, lunch break 12:30 – 1:30 p.m
• Prerequisites: A.G. (C.I.G.) diploma or equivalent (please contact us)

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, synthetic CVD and HPHT grown and treated diamonds and many others. Gem enhancement techniques such as polymer impregnation (jadeite), heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied.

Hands-on exercises with our portable in-house developed GL Gem Spectrometer and GL Gem Raman PL532 TEC system. Practicing gemmologists may use this lab class to up-grade their skills.

Please register here. View/Download and read carefully our refund policy (PDF).

GEM 270 GL Gem Spectrometer and Raman Workshop

This course is for current or future users of the GL Gem Spectrometer and GL Gem Raman PL532 system.

• Using PowerPoint presentations the development and use of advanced spectrometers is introduced
• Learning step-by-step testing method for the GL Gem Spectrometer and use of the GLGemRaman software and searchable database.

Practical testing of a number of interesting gem materials by the participants under supervision of the workshop facilitator; most up-to-date information on synthetic diamonds including CVD, HPHT and irradiation treatments and their detection. Limited to 4. participants.
Prerequisite: previous practical experience with spectroscope/spectrometer and good understanding of advanced spectroscopy.

Facilitator: Wolf Kuehn, B.A., M.A., Dipl.oec, FGA, FGG

• GEM 270-3 Friday, Nov 13 from 9:00 – 1:00 p.m. (4 hours) RESERVED
• GEM 270-4 Friday, Nov 13 from 2:00 – 6:00 p.m. (4 hours) SPACE AVAILABLE

Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate). Please register by October 15.

Fee: $ 295 (free for purchasers of the GL Gem Spectrometer or Raman PL532 TEC*); to keep costs down no lunch or beverage services are offered.

Please wait with travel arrangements until final confirmation.

Please register here. View/Download and read carefully our refund policy (PDF).

*Participants who  will purchase the GL Gem Spectrometer or GL Gem Raman system within one month will receive a $ 295 refund/discount.

_________

Wolf Kuehn, B.A., M.A., PDP (SFU),  Dipl.oec, F.G.A., F.G.G. – GLR&T Project Manager

© 2015 Gemlab Research & Technology, Vancouver, Canada

The name and logo GEMLAB GROUP is a registered trade mark (Registration # TMA407372 with the CIPO)

Gemlab Research & Technology.

Dear C.I.G. students and friends,

Just a reminder of exciting events coming soon: Please register NOW for the fall C.I.G. PDP Courses as spaces are limited; see GEM 270 GL Gem Spectrometer and Raman Workshop (Nov. 13) and  GEM 250 Advanced Gem Identification (Nov 14 – 17) below; several foreign participants have already registered.

We are proud to have a gemmologist in Indonesia who is sharing his GL Gem Raman PL532 with local students. To educational institutions and sponsors we can offer up to 10% discount on our spectrometers; please contact me for more details and about possible workshop opportunities in your country.

Also start planning for the AGTA GemFair in Tucson, Feb 2 – 7, 2016; I will be there at booth #31 from Feb. 1 – 8.

Wolf Kuehn, F.G.A., F.G.G.

Anniversary Sale for GL Gem Spectrometer

Like every year we offer a US$ 100 discount (until October 15)  on the 2015/16 model of the GL Gem Spectrometer; since its introduction in September 2010 over 200 units have been sold into over 30 countries.

The newest model has a diffraction order sorting filter for elimination of second order effects; we also recommend the GL Analyzer PL405/GL Xenon Flashlight Combo Kit for PL studies.

GEM 250 Advanced Gem Identification

The following course is an up-date course  for A.G. (C.I.G.) diploma holders and graduates of other schools and institutes; it is recommended as an introduction to the use of advanced gem testing equipment.

In this advanced course students will learn state-of-the-art techniques (including immersion-scope, gemstone magnetism, IR-VIS-NIR and Raman spectroscopy), etc. designed to identify confidently any gemstone encountered in the market place. Between 100 and 120 challenging gems including the most recent synthetic diamonds are available for testing. Max 5 participants.

• Fee: Can$ 995  (US$ 790 – Euros 700) includes comprehensive study guide and materials (copy of Gemstone Inclusion Library), use of lab equipment and study stones. Recommended text-book: Gemology by Peter Read. Download course flyer (PDF).
• GEM 250 – 3: Mon – Thu, November 9 – 12, 9:30 a.m. – 4:30 p.m. FULL
• GEM 250 – 4: Sat – Tue, November 14 – 17, 9:30 a.m. – 4:30 p.m. ONE SPACE available
• Location: Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate). 
• To keep costs down no lunch or beverage services are offered, lunch break 12:30 – 1:30 p.m
• Prerequisites: A.G. (C.I.G.) diploma or equivalent (please contact us)

Here a brief list of man-made gems in our study collection: Chatham, Kashan, Ramaura, Knischka, Lechleitner, Regency, Biron, Lenix, Gilson, Tairus rubies, sapphires, emeralds, alexandrite, opal, moissanite, synthetic CVD and HPHT grown and treated diamonds and many others. Gem enhancement techniques such as polymer impregnation (jadeite), heat-alteration, surface colour diffusion, irradiation, HPHT and glass filling are studied.

Hands-on exercises with our portable in-house developed GL Gem Spectrometer and GL Gem Raman PL532 TEC system. Practicing gemmologists may use this lab class to up-grade their skills.

Please register here. View/Download and read carefully our refund policy (PDF).

GEM 270 GL Gem Spectrometer and Raman Workshop

This course is for current or future users of the GL Gem Spectrometer and GL Gem Raman PL532 system.

Using PowerPoint presentations the development and use of advanced spectrometers is introduced Learning step-by-step testing method for the GL Gem Spectrometer and use of the GLGemRaman software and searchable databases. Practical testing of a number of challenging gem materials by the participants under supervision of the workshop facilitator; most up-to-date information on synthetic diamonds including CVD, HPHT and irradiation treatments and their detection. Limited to 4 participants. Prerequisite: previous practical experience with spectroscope/spectrometer.

Facilitator: Wolf Kuehn, B.A., M.A., Dipl.oec, FGA, FGG

• GEM 270-3 Friday, Nov 13 from 9:00 – 1:00 p.m. (4  hours) FULL
• GEM 270-4 Friday, Nov 13 from 2:00 – 6:00 p.m. (4 hours) ONE SPACE available

Sandman Signature Hotel – Vancouver Airport, Richmond B.C. (special room rate).

Fee: Can$ 295 (US$ 230 – Euros 200, free for purchasers of the GL Gem Spectrometer or Raman PL532 TEC*); to keep costs down no lunch or beverage services are offered.

Please wait with travel arrangements until final confirmation.

Please register here. View/Download and read carefully our refund policy (PDF).

*Participants who  will purchase the GL Gem Spectrometer or GL Gem Raman system within one month will receive a $ 295 refund/discount.

Gemmology Equipment For Sale

The following items were purchased about 3 – 4 years ago and are in perfect condition:

1. GL Gem Spectrometer (2012 edition), Dell netbook and heavy duty case
2. Gem Refractometer
3. Calcite  and London Dichroscope
4. Diffraction spectroscope
5. Prism spectroscope
6. Polariscope with conoscope
7. Fiber optic two arm w/variable light
8. Chelsea filter and set of Hanneman Filters
9. Gemoro CZ Master Diamond Color set of 10 – 1ct. size
10. Leverage Gauge
11. Gem N Eye II Tester
12. I – Gem Gold Price Scale
13. Jewelers bench

Please contact us for more details and prices; the seller is flexible but prefers a Canadian buyer.

AGTA GemFair in Tucson, Feb 2 – 7, 2016

February 2- February 6, 2016, 10:00a.m. – 6:00 p.m.

February 7, 2016, 10:00a.m. – 4:00 p.m.

Tucson Convention Center
260 South Church, Tucson, Arizona 85701
(Main Entrance Off Granada)

_________

Wolf Kuehn, B.A., M.A., PDP (SFU),  Dipl.oec, F.G.A., F.G.G. – GLR&T Project Manager

© 2015 Gemlab Research & Technology, Vancouver, Canada

Dear C.I.G. students and friends,

We had very successful workshops last month with attendants from New York, Rhode Island, Houston, Kelowna and Vancouver. I am already looking forward to the next C.I.G. and Gemlab R&T PDP event scheduled for May 2016.  See GL Gem Spectrometer and Raman Workshop (May. 13), GEM 210 Diamond Grading (May 11 – 13),  GEM 150 Gem Identification  and GEM 250 Advanced Gem Identification (May 14 – 17).

If you are looking for a BIG Christmas gift we offer US$ 100 off the GL Gem Spectrometer and US$ 500 off the GL Gem Raman PL532 TEC; transactions must be completed by December 31. We also have an almost new Meiji GEMZ-8TR microscope and several gem testing instruments for sale; see below.

I wish you all a Merry Christmas and a Happy New Year 2016; I would like to meet many of you during the AGTA GemFair in Tucson, Feb 2 – 7, 2016.

Wolf Kuehn, F.G.A., F.G.G.

Gemmology Equipment For Sale

Meiji GEMZ-8TR microscope FOR SALE List Price with all accessories is over US$ 4000. Sale Price Can$ 3,500.00 Don’t miss this opportunity.

	Polariscope (almost new) Can$ 40		Chelsea filter Can$ 35 (new US$ 39)		Integrating Sphere for spectrometer Can$ 700 (paid US$ 995)
	Prism Spectroscope with illuminated wavelength scale Can$ 150 (compare Kruss US$ 165.95)		Table Prism spectroscope with quartz halogen light Can$ 400 (new US$ 500+)		Set of Hanneman Filters JTV Can$ 50 (Kassoy US$ 69.95)
	Gemoro CZ Master Diamond Color set of 10 @ 1ct size Can$ 300 (paid US$ 335)		Micromat Leverage Gauge Can$ 200 (paid US$ 287)		Gem N Eye II Tester Can$ 380 (paid US$ 480)

• Diffraction grating spectroscope Can$ 60 (compare Kruss US$ 89.95)
• Calcite Dichroscope Can$60 (paid US$ 69)
• I – Gem Gold Price Scale Can$ 25 with power adapter (Amazon on sale US$ 24.95)

The items were purchased  by now retired appraiser about 3 years ago and are in almost new condition; please contact me at wolf@cigem.ca if you are interested.

Join us at the AGTA GemFair in Tucson, Feb 1 – 7, 2016

February 2- 6, 2016, 10:00a.m. – 6:00 p.m.

February 7, 2016, 10:00a.m. – 4:00 p.m.

Tucson Convention Center, 260 South Church, Tucson, AZ (Main Entrance Off Granada)

__________________________________________________________

Wolf Kuehn, B.A., M.A., PDP (SFU),  Dipl.oec, F.G.A., F.G.G. – GLR&T Project Manager

© 2015 Gemlab Research & Technology, Vancouver, Canada

The name and logo GEMLAB GROUP is a registered trade mark (Registration # TMA407372 with the CIPO)

Gemlab Research & Technology.

I wish you all a Happy and Successful New Year 2016. Wolf Kuehn, Project Manager GLR&T, Vancouver, Canada

Upcoming Events and Workshops

Please mark your 2016 calendar for the following events:

February 2 – 7: AGTA GemFair in Tucson, Arizona; visit us at booth #31

March 11 – 13: Vancouver Gem Show, Pacific National Exhibition Forum, 2901 E Hastings St, Vancouver, B.C.

April 8 – 10: BC Gem Show, Abbotsford, B.C. – bring your gemstones for free testing

The following C.I.G. courses take place at the Sandman Signature Hotel – Vancouver Airport, Richmond B.C.

May 11 – 13: GEM 210 Diamond Grading – prerequisite GEM 130 or equivalent

May 13: Advanced Spectroscopy Workshop – introduction to the use of spectrometers

May 14 – 17: GEM 250 Advanced Gem Identification – upgrade course for A.G. (C.I.G.) diploma holders and others

We are also participating at the following events:

June 9 – 15: GeoRaman XII International Conference, Novosibirsk, Russia

June 20 – 30: Workshops in the Far East (Indonesia, Malaysia and Thailand), T.B.A.

August 25 – 28: Workshops in Colombo, Sri Lanka prior to Facets 2016  International Gem & Jewellery Show

Tucson Specials

Until January 31 we offer US$ 100 off the 2015 model of the GL Gem Spectrometer ; spectrometer must be picked up during the AGTA GemFair in Tucson during Feb 2 – 7; no shipping charges.

We have an almost new Meiji GEMZ-8TR microscope and several gem testing instruments for sale; see below.

Gemmology Equipment FOR SALE

Meiji GEMZ-8TR microscope FOR SALE List Price with all accessories is over US$ 4000. Sale Price Can$ 3,500.00 Don’t miss this opportunity.

	Polariscope (almost new) Can$ 40		Chelsea filter Can$ 35 (new US$ 39)		Integrating Sphere for spectrometer Can$ 700 (paid US$ 995)
	Prism Spectroscope with illuminated wavelength scale Can$ 150 (compare Kruss US$ 165.95)		Table Prism spectroscope with quartz halogen light Can$ 400 (new US$ 500+)		Set of Hanneman Filters JTV Can$ 50 (Kassoy US$ 69.95)
	Gemoro CZ Master Diamond Color set of 10 @ 1ct size Can$ 300 (paid US$ 335)		Micromat Leverage Gauge Can$ 200 (paid US$ 287)		Gem N Eye II Tester Can$ 380 (paid US$ 480)

• Diffraction grating spectroscope Can$ 60 (compare Kruss US$ 89.95)
• Calcite Dichroscope Can$60 (paid US$ 69)
• I – Gem Gold Price Scale Can$ 25 with power adapter (Amazon on sale US$ 24.95)

We also have the following systems available; please contact us.

GL GemRaman PL532 TEC Demo (2014 model refurbished)

GL Gem Raman PL 532 (first generation 2012 model upgraded to TEC)

GL Gem Spectrometer (first generation 2011 model updated to 2015 version)

__________________________________________________________

Wolf Kuehn, B.A., M.A., PDP (SFU),  Dipl.oec, F.G.G. – GLR&T Project Manager

© 2016 Gemlab Research & Technology, Vancouver, Canada

I had the opportunity to meet many friends and colleagues during the AGTA GemFair held in Tucson from Feb 2 – 7.

The GL Gem Raman PL532 tested and identified several unusual mineral specimen successfully; for samples with rough surfaces the TEC was very helpful and proved that our unique OneFocus Optical System can handle difficult situations. 

We are now getting ready for the Vancouver Gem Show to be held March 11 – 13 (next week-end).

For upcoming workshops in May (see below) I recommend to register soon; foreign participants may need several weeks to get their necessary papers for entry into Canada; please contact me for any questions you have.

Wolf Kuehn, Project Manager GLR&T, Vancouver, Canada

Vancouver Gem Show, March 2016

March 11 – 13 Pacific National Exhibition Forum 2901 E Hastings St, Vancouver, BC Friday, March 11, 12:00-8pm Saturday, March 12, 10am-6pm Sunday, March 13, 10am-5pm Admission Fee at Show doors: General: one-day ticket – $7, three-day ticket – $10 Senior/Student: one-day ticket – $5, three-day ticket – $7 Children 12 and under free (with adult)

The new and exciting bi-annual Vancouver Gem & Mineral Show coming to the PNE following nine successful shows in Calgary and Edmonton.

We will have a booth representing the Canadian Institute of Gemmology (C.I.G.) and Gemlab Research & Technology demonstrating the latest advanced gem testing equipment. Books (new Exotic Gems Vol 4 by Newman) and instrument sales (used equipment listing (PDF), Meiji GEMZ-8TR), special gem study collections, free on-site gemmological services (2 items per visitor), etc.

Upcoming Events and Workshops

April 8 – 10: BC Gem Show, Abbotsford, B.C. – bring your gemstones for free testing

The following C.I.G. courses take place at the Sandman Signature Hotel – Vancouver Airport, Richmond B.C.

May 11 – 13: GEM 210 Diamond Grading – prerequisite GEM 130 or equivalent

May 13: Advanced Spectroscopy Workshop – introduction to the use of spectrometers

May 14 – 17: GEM 250 Advanced Gem Identification – upgrade course for A.G. (C.I.G.) diploma holders and others.

Gemmology Equipment FOR SALE

Meiji GEMZ-8TR microscope FOR SALE List Price with all accessories is over US$ 4000. Sale Price Can$ 3,500.00 Don’t miss this opportunity.

	Diffraction grating spectroscope Can$ 60 (compare Kruss US$ 89.95) Calcite Dichroscope Can$60 (paid US$ 69) I – Gem Gold Price Scale Can$ 25 with power adapter (Amazon on sale US$ 24.95)		Chelsea filter Can$ 35 (new US$ 39)		Integrating Sphere for spectrometer Can$ 700 (paid US$ 995)
	Prism Spectroscope with illuminated wavelength scale Can$ 150 (compare Kruss US$ 165.95)		Table Prism spectroscope with quartz halogen light Can$ 400 (new US$ 500+)		Set of Hanneman Filters JTV Can$ 50 (Kassoy US$ 69.95)
	Gemoro CZ Master Diamond Color set of 10 @ 1ct size Can$ 300 (paid US$ 335)		Micromat Leverage Gauge Can$ 200 (paid US$ 287)

Download current listing (PDF).

We also have the following systems available; please contact us.

GL GemRaman PL532 TEC Demo (2015 model upgraded)

Jade & Abalone Pearl Handbook

Exotic Gems, Volume 4 (Can$ 29.95) will be available during the Vancouver Gem Show and BC Gem and Mineral Show in Abbotsford.

Buying jade is a challenge because its value can vary significantly depending on its quality and treatment status. Moreover, fake jade is prevalent in the marketplace. Exotic Gems, Volume 4 describes with text and photos how to evaluate jade quality, as well as detect imitations and dyed jade. The guide also illustrates advanced detection techniques, and compares price factors and characteristics of jadeite and nephrite jade. Abalone pearls are also covered, with tips on how to identify and evaluate them.

__________________________________________________________

Wolf Kuehn, B.A., M.A., PDP (SFU),  Dipl.oec, F.G.G. – GLR&T Project Manager

© 2016 Gemlab Research & Technology, Vancouver, Canada

Dear Friends and Colleagues, this year has been busy already with various show. 

The Vancouver Gem Show held March 11 – 13 was highly successful and well attended. Saturday, March 12 broke the record with over 2,000 visitors and people were lining up for half an hour to get into the show. It was perhaps the most popular gem show Vancouver has ever seen.

We are now getting ready for the  BC Gem Show, Abbotsford BC to be held April 8 – 10 (next week-end).

For the upcoming Advanced Spectroscopy Workshop and Advanced Gem Identification in May (see below) I recommend to register now; there are few spaces left.

Foreign participants who do not have their Visa papers for entry into Canada by now will be unable to register; we will off er the same workshops again in November. 

BC Gem Show, Abbotsford BC, April 8 – 10, 2016

Many Club Displays, Demonstrations, Grab Bags, Children’s Creative Workshop, Gold Panning & Door Prizes. Friday: 10:00am – 8:00pm Saturday: 10:00am – 6:00pm Sunday: 10:00am – 5:00pm The  GL Gem Spectrometer  and the GL Gem Raman PL532 will be demonstrated.

Visit our booth at the Canadian Institute of Gemmology (C.I.G.) and Gemlab Research & Technology.

For Sale are books (newly published Exotic Gems Vol 4 by Newman) and instruments (used equipment listing (PDF), Meiji GEMZ-8TR), special gem study collections, free on-site gem and mineral identification with GL Gem Raman PL532 TEC  (2 items per visitor) and much more.

Upcoming Events and Workshops

April 8 – 10: BC Gem Show, Abbotsford, B.C. – bring your gemstones for free testing

The following C.I.G. courses take place at the Sandman Signature Hotel – Vancouver Airport, Richmond B.C.

May 13: GEM 350 Advanced Spectroscopy Workshop – introduction to the use of advanced spectrometers

May 14 – 17: GEM 250 Advanced Gem Identification – upgrade course for A.G. (C.I.G.) diploma holders and others.

Gemmology Equipment FOR SALE

Meiji GEMZ-8TR microscope FOR SALE List Price with all accessories is over US$ 4000. Sale Price Can$ 3,500.00 Don’t miss this opportunity.

	Gem N Eye II Tester Can$ 380 (paid US$ 480)Polariscope (almost new) Can$ 40		Chelsea filter Can$ 35 (new US$ 39)		Integrating Sphere for spectrometer Can$ 700 (paid US$ 995)
	Prism Spectroscope with illuminated wavelength scale Can$ 150 (compare Kruss US$ 165.95)		Table Prism spectroscope with quartz halogen light Can$ 400 (new US$ 500+)		Set of Hanneman Filters JTV Can$ 50 (Kassoy US$ 69.95)
	Gemoro CZ Master Diamond Color set of 10 @ 1ct size Can$ 300 (paid US$ 335)		Micromat Leverage Gauge Can$ 200 (paid US$ 287)

• Diffraction grating spectroscope Can$ 60 (compare Kruss US$ 89.95)
• Calcite Dichroscope Can$60 (paid US$ 69)
• I – Gem Gold Price Scale Can$ 25 with power adapter (Amazon on sale US$ 24.95)
• Download current listing (PDF).

We also have the following Raman system available; please contact us.

GL GemRaman PL532 TEC Demo (2014 model refurbished)

Jade & Abalone Pearl Handbook

Exotic Gems, Volume 4 (Can$ 29.95) by Renee Newman will be available during the BC Gem Show, Abbotsford BC.

Buying jade is a challenge because its value can vary significantly depending on its quality and treatment status. Moreover, fake jade is prevalent in the marketplace. Exotic Gems, Volume 4 describes with text and photos how to evaluate jade quality, as well as detect imitations and dyed jade. The guide also illustrates advanced detection techniques, and compares price factors and characteristics of jadeite and nephrite jade. Abalone pearls are also covered, with tips on how to identify and evaluate them.

Dear Friends and Colleagues,

we have been busy with various gem shows/workshops and are now preparing for our summer activities.  

The Vancouver Gem Show held March 11 – 13 was highly successful and well attended;  the BC Gem Show in Abbotsford, BC attracted visitors from the Fraser Valley and Washington State.

Please note in your calendar the following dates:

• Northwest Fluorescent Mineral Society, FMS Chapter, Renton, WA, July 16 – 17. I will be speaking  about “Advanced Spectroscopy in Mineral Identification” during their annual meeting.

• Join us at FACETS Sri Lanka, Colombo, September 1 – 4. Several workshops are being planned. TBA

We recently  joined the ISG Global Network; it is free and provides a vast resource base for anyone interested in gems and gemmology.

From Gemlab Research & Technology

GL Gem Spectrometer 2016/17 model

If you have an iPhone or similar cellphone you know that a new model with better electronics and features will be offered by the manufacturer every year. Some people replace their phone regularly others are happy if there are any upgrades for their old models. 

After five years and a user base of over 200  around the world we decided to replace the motherboard in the GL Gem Spectrometer with a modern modular design and faster microprocessor. This will allow us to add new features and components in the future such as Bluetooth, WiFi communication, database search, etc.

BETTER and FASTER: The GL Gem Spectrometer™ 2016/17 model with new motherboard and “Point & Shoot” software version 3.0 (just released); it is now available for purchase at a slightly higher price (US$ 1,695).

The new software version 3.0 does not run on previous models and provides a simple interface that produces a stable normalized transmission/absorption spectrum in real-time. The screen can be saved and printed out in addition to fast loading of reference spectra, etc.

Watch how a normalized absorption spectrum of green glass is obtained in 25 seconds (video, no sound).

For users of the older spectrometers we upgraded the software to version 2.8;  an upgrade package is available for download in the GLGemSpec Support section. To access the user section you have to log-in; if you lost your password please request a new one and the system will send it to your e-mail address.

Upgraded GL Gem Raman PL535 2016 model

BETTER and FASTER: The GL Gem Raman PL 532 TEC™ (100 – 5,440 cm-1) and Photoluminescence Spectrometer (530 – 750 nm) 2016/17 model with new motherboard and “Point & Shoot” software version 3.0 (just released). The databases have been updated and are available for download in the GLGemRaman Support section.

FOR SALE

Meiji GEMZ-8TR microscope 

Various gem testing tools; download current listing (PDF)

GL GemRaman PL532 TEC Demo (2015 model refurbished)

Fall 2016 Workshops

Due to the increased interest in advanced gem testing we have scheduled the following classes:

• Advanced Spectroscopy Workshop, Vancouver, Nov. 11
• Advanced Gem Identification, Vancouver, Nov. 12 – 15

Foreign students must enter Canada on a visitor’s visa; copy of official Visa document must be provided 40 days prior to course commencement.

 Member of ISG Global Network

Dear Friends and Colleagues,

we have been busy with various gem shows/workshops and are now preparing for our late summer/fall activities. Please visit us at our booth #33 during the Vancouver Gem & Mineral Show  next week. 

Vancouver Gem Show, August 2016

August 12 – 14 Kitsilano Ice Rink 2690 Larch St, Vancouver, BC Friday, August 12, 12:00 – 8pm Saturday, August 13, 10am – 6pm Sunday, August 14, 10am – 5pm

Admission Fee at Show doors:
General: one-day ticket – $7, three-day ticket – $10
Senior/Student: one-day ticket – $5, three-day ticket – $7
Children 12 and under free (with adult)

We will have a booth representing the Canadian Institute of Gemmology (C.I.G.) and Gemlab Research & Technology (GLR&T) demonstrating the latest advanced gem testing equipment.

Books and instrument sales (Meiji GEMZ-8TR), special gem study collections, free on-site gemmological services (2 items per visitor), etc.

Please note in your calendar the following dates:

• Join us at FACETS Sri Lanka, Colombo, September 1 – 4. Several workshops are being planned. TBA
• GEM 210 Diamond Grading Workshop, Vancouver, Nov. 8 – 10
• Advanced Spectroscopy Workshop, Vancouver, Nov. 11
• Advanced Gem Identification, Vancouver, Nov. 12 – 15

Upgraded GL Gem Raman PL535 2016/17 model

Our Raman spectrometer  received a new mother-board and works with the new software version 3.00; fast averaging allows real-time observation of the Raman spectrum. Since 2016 all units come with a mechanical laser security lock.

All databases have been updated and are available for download in the GLGemRaman Support section; for new users we recommend to read the information for Version 3.xx.

GL Gem Spectrometer 2016/17 model

After five years and a user base of over 200 around the world we decided to replace the motherboard in the GL Gem Spectrometer with a modern modular design and faster microprocessor. This will allow us to add new features and components in the future such as Bluetooth, WiFi communication, database search, etc.

The 2016/2017 model of the GL Gem Spectrometer is now available for purchase at a slightly higher price (US$ 1,695).

Watch how a normalized absorption spectrum of green glass is obtained in 25 seconds (video, no sound).

For users of the older spectrometers we upgraded the software to version 2.8;  an upgrade package is available for download in the GLGemSpec Support section. To access the user section you have to log-in; if you lost your password please request a new one and the system will send it to your e-mail address.

FOR SALE

Meiji GEMZ-8TR microscope 

Various gem testing tools; download current listing (PDF)

Fall 2016 Workshops

We have few spaces available at the following classes to be held at the Sandman Signature Hotel – Vancouver Airport, Richmond B.C.:

• GEM 210 Diamond Grading Workshop, Vancouver, Nov. 8 – 10
• Advanced Spectroscopy Workshop, Vancouver, Nov. 11
• Advanced Gem Identification, Vancouver, Nov. 12 – 15

Foreign students must enter Canada on a visitor’s visa; copy of official Visa document must be provided 40 days prior (by October 1, 2016) to course commencement.

We recently  joined the ISG Global Network; it is free and provides a vast resource base for anyone interested in gems and gemmology.

PLEASE NOTE: We will have limited Office Hours from August 23 – September 19 due to travelling in Europe and Far East.

 Member of ISG Global Network

Dear Friends and Colleagues,

We had many visitors to our booth during the Vancouver Gem & Mineral Show last week-end; I am now preparing for a trip to Europe and Sri Lanka. Please note that  there are limited Office Hours from August 23 – September 19.

If you are interested in participating in an advanced spectroscopy workshop (“Raman and PL Spectroscopy in Gem & Mineral Identification” with hands-on exercises) on September 7  – a few days after FACETS Sri Lanka, Colombo (September 1 – 4) – contact Gamini Zoysa at gaminigz@hotmail.com for further information.

Enjoy the rest of your summer holiday season.

Wolf Kuehn

A new educational CD about spectroscopy

Also have a look at his “Through my Spectroscope” column which now includes  his own GL Gem Spectrometer.

New version of Spekwin32

Dr. Menges has published the final version of Spekwin 32 (1.72.2, June 15); it is a comprehensive software for editing and publishing spectra and allows direct import of GLGemSpec files (.fak) and GLGemRaman files (.rruff). He has started work on the all-new Spekwin32 successor to be released later this year.

Of particular interest is the Spectroscope View for owners of the GL Gem Spectrometer. Download the guide “Show Spectroscope View”

Also look at his universal software for DIY webcam spectrometers.

News from Gemlab R&T

Users of the new software version 3.00 of both the GL Gem Spectrometer and the GL Gem Raman PL535 2016/17 models should soon receive a small update.

The spectrometer software will have an “auto-y scale” icon (like in the Raman software by default) which keeps the spectrum visible at all times; this is possible to the new electronics built into the model 2016/17 spectrometers. As the spectrum is delivered in real-time adjustments to exposure, etc are seen immediately.

For the Raman software the search function will be unlocked and the provided data-bases can be accessed directly; user spectra can then then be easily added.

FOR SALE

Meiji GEMZ-8TR microscope  in almost new condition.

In September we will have 2 Kyowa microscopes (20x, 40x and 10x, 20x with adapter) and 2 Kyowa refractometer units (all slightly used) for sale. We also have 2 calcite dichroscopes, 2 grating diffraction and 1 prism spectroscope with halogen light source and several other testing instruments to offer. Please contact us if you are looking for a particular testing instrument.

Download current listing (PDF).

Fall 2016 Workshops

We have few spaces available at the following classes to be held at the Sandman Signature Hotel – Vancouver Airport, Richmond B.C.; please register on-line:

• Diamond Grading Workshop, Vancouver, Nov. 8 – 10
• Advanced Spectroscopy Workshop, Vancouver, Nov. 11
• Advanced Gem Identification, Vancouver, Nov. 12 – 15

Foreign students must enter Canada on a visitor’s visa; copy of official Visa document must be presented 40 days prior (by October 1, 2016) to course commencement.

We recently  joined the ISG Global Network; it is free and provides a vast resource base for anyone interested in gems and gemmology.

 Member of ISG Global Network

Dear Friends and Colleagues,

after attending  Facets 2016 in Sri Lanka and spending some time in the Austrian Alps I am back  preparing for our fall activities. I am looking forward to the upcoming workshop and welcome our foreign participants.

I want to thank Gamini Zoysa who hosted an Advanced Spectrometry Workshop in Colombo after the gem show; we had attendees from several countries who could familiarize themselves first hand with the operation of  the GL Gem Spectrometer  and the GL Gem Raman PL535.

Also start planning for the AGTA GemFair in Tucson from Jan 31 – Feb 5.

Please note in your calendar the following dates:

• GEM 150 Gem Identification, Vancouver, Nov. 12 – 15
• Advanced Spectroscopy Workshop, Vancouver, Nov. 11
• Advanced Gem Identification, Vancouver, Nov. 12 – 15
• Join us at the AGTA GemFair in Tucson, Jan 31 – Feb 5, 2017
• Visit the Vancouver Gem Show, March 24 – 26, 2017

Visit to the Gem Mining Areas in Rathnapura, Sri Lanka

I visited several several small scale sapphire mines nearby with Kasun (Hotel Gem Land).

More images and report at the Facebook page of the Canadian Institute of Gemmology.

Highly Recommended New Book

I just received this exceptional new book (almost coffee table size). Each of the 440 pages is full of images and in-depth descriptions of gems and jewellery; I liked in particular the section on emerald and opal.

It can be purchased for US$ 35 or less at Amazon or Target.

From Gemlab Research & Technology

GL Gem Spectrometer 2016/17 model

We have replaced the motherboard in the GL Gem Spectrometer with a modern modular design and faster microprocessor. This will allow us to add new features and components in the future such as Bluetooth, WiFi communication, database search, etc. With the new GLGemSpec software (version 3.2)  spectra can be saved and matched with the integrated spectral library of over 180 gem references (experimental).

The 2016/2017 model of the GL Gem Spectrometer is now available.

Watch how a normalized absorption spectrum of green glass is obtained in 25 seconds (video, no sound).

GL Gem Raman PL535 2016/17 model

Our Raman spectrometer comes with a new motherboard, “Point & Shoot” software and integrated spectral library; fast averaging allows real-time observation of the Raman spectrum. All units come now with a mechanical laser security lock.

Databases have been updated and are available for download in the GLGemRaman Support section With the new GLGemRaman software (version 3.2) spectra can be saved and matched with the integrated spectral library of over 300 gem references or imported into a separate searchable database program with over 3,500 edited references; this database is linked to the large on-line mineralogical RRUFF database for Raman spectra.

FOR SALE

One GL GemRaman PL532 TEC Demo unit in excellent condition.

Various gem testing tools; download current listing (PDF).

AGTA GemFair in Tucson

Join us at booth 31 at the Galleria Level of the Tucson Convention Centre

Vancouver Gem Show, March 2017 

Admission Fee at Show doors:
General: one-day ticket – $7, three-day ticket – $10
Senior/Student: one-day ticket – $5, three-day ticket – $7
Children 12 and under free (with adult)

BIG GEM LIQUIDATION SALE

We will have a booth representing the Canadian Institute of Gemmology (C.I.G.) and Gemlab Research & Technology (GLR&T) demonstrating the latest advanced gem testing equipment.

Instrument sales: used equipment listing (PDF), special gem study collections, on-site gemmological services (small nominal fee), etc.

 Member of ISG Global Network