CIGem News Spring 2017

Dear Friends and Colleagues,

We had a very successful Vancouver Gem Show at the PNE with record attendance: over 4,000 visitors filled the isles during  the March 23 – 26 event.  We are already  planning for the next Vancouver Gem & Mineral Show in Kitsilano scheduled for August 11 – 13.

I will be again travelling  in Europe and the Far East during June/July to give workshops and seminars. Please contact me if you are interested of hosting an event in your country.

Our GL Gem Spectrometer is on sale for limited time; save US$100.

I am looking forward to meeting you. Wolf Kuehn

Please note in your calendar the following dates:

From Gemlab Research & Technology

GL Gem Spectrometer 2017 model on SALE until June 10, 2017

Order now and save US$ 100. Regular price US$ 1,695 US$ 1,595 – €uro 1.525 €uro 1.435

Our BESTSELLER with over 300 users in 35 countries. With the new “Point & Shoot” GLGemSpec software (version 3.x)  spectra can be saved and matched with the integrated spectral library of over 100 references for Gemstones, Diamonds and PL504.

For diamond characterization we  recommend the use of the GL Gem Spectrometer to detect any “Cape lines”. If not present inspect the diamond under a microscope with crossed polarizers; for instructions download article here (PDF).

For diamond PL studies we recommend the Nichia UV 365nm LED flashlight; it is the best true LW UV LED light with almost no visible light being emitted.

Order the  2017 model of the GL Gem Spectrometer in our on-line store.

GL Gem Raman PL535 2017 model

The GL Gem Raman system is being used by jewellery appraisers, gem dealers, mineral collectors, researchers in geoscience applications in 22 countries.

With the new GLGemRaman software (version 3.x) 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.

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 instruments are for sale during the Vancouver Gem Show.

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

New Books

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)