CIGem News Summer 2017

Dear Friends and Colleagues,

View from Sas Ciampac, 2672 m with interesting geological formations of Sella Group in the Dolomites, Italy

I have been travelling  in Europe in late June/early July and was lucky to spend two weeks in the Dolomites (Colfosco and Cortina d’Ampezzo – both places ideal for alpine hiking and mountain biking). 

After my return we are now getting ready for the next Vancouver Gem & Mineral Show in Kitsilano scheduled for August 11 – 13. Books, used instruments, special gem study collections with gem and mineral liquidation are on sale. I am looking forward to meeting you. And have a nice summer holiday!

Wolf Kuehn

GL Gem Halogen Light Holder Update

Recent purchasers of the 2017 GL Gem Spectrometer may have noticed an additional SMA 905 port on top of the GL Gem Light holder.

Together with a solarization resistant fiber assembly the extra port can be used to connect with the built in halogen light and/or attached to other UV light sources (UVNS) and lasers.

We are just beginning with our research and will report about possible applications in the next GL Newsletter. 

GL Gem Halogen Holder

UVNS assembly with fiber probe

A new supply of the GL Gem Spectrometer 2017 model will be again available by August 15; please pre-order now.

GL Gem Raman Software Update

Rapid search with integrated databases

We have updated the GL Gem Raman PL532 2016/17 model software to final version 3.1.

The integrated search engine can now accommodate customized databases with up to 3,000 references; search time is under one second which is probably the fastest presently known.

If you have not received the upgrade package with updated reference libraries please contact us.

This is for version 3.xx software only. Order the 2017 model of the GL Gem Raman PL532 here.

Vancouver Gem Show, August 2017

Vancouver Gem & Mineral Show, Kitsilano Arena, 2690 Larch St, Vancouver

Friday, August 11, 12:00-9pm
Saturday, August 12 , 10am-7pm
Sunday, August 13, 10am-6pm

Admission Fee at the Show doors:
General: one-day ticket – $8, three-days ticket – $12
Senior/Student: one-day ticket – $6, three-days ticket – $9
Children 12 and under free (with adult)

The exciting triennial Gem & Mineral Show coming to Vancouver following successful shows in Calgary, Edmonton, Victoria and Kewlowna.

We will have a booth representing the Canadian Institute of Gemmology (C.I.G.) and Gemlab Research & Technology(Gemlab R&T) demonstrating the latest advanced gem testing equipment. Books (new Gem Buying Guide by Newman) and instrument sales (used equipment listing (PDF)), special gem study collections and large gem and mineral liquidation sale.​

The third Vancouver Gem Show this year will be held again in the fall at the PNE from 1-3 December 2017. 

Please note in your calendar the following dates:

The Canadian Institute of Gemmology has been approved by the Minister of Employment Workforce Development and Labour as an educational institution; Canadian students are entitled to a tuition tax credit under subsection 118.5(1(a)(ii) of the Income Tax Act (please use your receipt for your claim).

GL Gem Raman PL535 2017 model

Raman In Operation


The GL Gem Raman system is being used by jewellery appraisers, gem dealers, mineral collectors, researchers in geoscience applications in 23 countries.

With the new GLGemRaman software (version 3.1) spectra can be saved and matched with the integrated spectral library of up to 3000 gem references.

Please order here.

Download newest Gems & Gemology Spring 2017 issue (PDF). Excellent article about jadeite and its sources with spectral references important for GLGemSpec users. Also interesting observations about CVD grown diamonds.Tucson and Lab News. Take the 2017 Challenge Test! Good luck.


Save US$ 1,000: GL GemRaman PL532 TEC Demo unit in excellent condition.

Used Kyowa gemmological microscopes and refractometers; download current listing (PDF). These and other instruments are for sale during the Vancouver Gem Show.

Gemstone Buying Guide, Third Edition by Renee Newman


This updated full-colour guide to coloured gems provides concise yet comprehensive information on quality evaluation, price comparison, gem identification, cutting styles, treatments, fake stones, optical effects, gem care and geographic sources. Many of the gems are shown mounted in striking designer jewelry.

There are 323 new colour photos and several new gem species and varieties in this 3rd edition.

Price Can$ 26.95 (available during the Vancouver Gem Show)