Research & Technology



Gemlab Research & Technology (GLR&T)is part of Gemlab Group and a subsidiary of the Canadian Institute of Gemmology (C.I.G.); the facility has developed advanced gem and mineral testing instruments such as the GL Gem Spectrometer™, the GL Gem Spectrometer NIR PL405 and the GL Gem Raman™ PL532 TEC.

Please mark the following dates in your calendar:

GL Gem Spectrometer

The popular GL Gem Spectrometer™  helps to identify gemstones based on their spectral pattern and to analyze chromophores causing certain colours.

It is also useful to detect irradiated diamonds and possible HPHT treatments and whether green jadeite is naturally coloured.

It is a portable unit connected to a computer and replaces the traditional hand-held spectroscope avoiding potential eye damage under strong halogen light; it was introduced in 2010.

More info about the GL Gem Spectrometer

Portable GL Gem Spectrometer

Portable GL Gem Spectrometer

GL Gem Spectrometer NIR PL405

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 (with the GL Halogen Gem Holder).

This spectrometer has a higher resolution than the GL Gem Spectrometer, a Long Wave Pass Filter (LWPF) and is optimized for the NIR range; it was introduced in 2015.

It allows identification of many gemstones such as ruby, sapphire, emerald, spinel, alexandrite, etc. based on their PL response and 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.

More info about the GL Gem Spectrometer NIR PL405

GL Gem Spectrometer NIR PL405

GL Gem Spectrometer NIR PL405

GL Gem Raman PL532

The GL Gem Raman™ PL532 TEC is an advanced dual purpose gem testing system for experienced gemmologists, gem dealers, mineral collectors, researchers in geoscience applications and laboratory personnel; it is also an excellent educational tool. It was introduced in 2012 and is the first and fastest commercially available Raman and Photoluminescence (PL) spectrometer offered at an economical price.

Using an extensive reference data-base the GL Gem Raman quickly can tell the difference between diamond, cubic zirconia, glass and zircon, distinguish natural from polymer treated jadeite and from nephrite, separate real from faux pearls, tell whether it is ivory or plastic; it works great on beads, carvings and gem materials set in jewellery.

It is very efficient in detecting treatments such as irradiation, HPHT and other colour enhancements in gemstones; it will help in the determination of the nature of diamonds, gemstones and minerals.

NEW: GL Gem Raman Band Pass Filter (GLBPF) for suppression of fluorescence in Raman mode

More info about the GL Gem Raman PL532 TEC

GL Gem Raman with Netbook

GL Gem Raman with Netbook

Gemlab Research & Technology  (GLR&T) conducts independent research in gemmology and mineralogy related areas.

Early projects included colour gem grading with spectrometers and gem identification techniques using an immersion-scope. More recently portable fibre-optics spectrometers and innovative lighting technologies have expanded traditional gem testing procedures; they will become important tools for the practising gemmologist in the future.

As a subsidiary of the Canadian Institute of Gemmology GLR&T is in the forefront of providing professional development to its graduate students and members of the jewellery trade.

About the history of Gemlab Group go to GLR&T Timeline 

 Gemlab R&T Development and Support Team

  • J Wolf Kuehn, B.A., M.A., PDP (SFU), Dipl.oec, F.G.G. – GLR&T Project Manager, Vancouver, B.C., Canada
  • Stanislav O Konorov, Ph.D. (Laser Physics), Senior Scientific Assistant, Dept. of Chemistry, University of Victoria, B.C., Canada
  • Matthew Stockinger, B.A. (Chemistry, Mathematics), M.S. (Teaching), St. Cloud, MN, USA
  • W. William Hanneman, Ph.D. (Chemistry, retired), Rio Rancho, New Mexico, USA
  • J M Dereppe, Ph.D. (Professor Emeritus, Physical Chemistry Department), University of Louvain, Belgium

The name and logo is a registered trade mark (Registration # TMA407,372 Canadian Intellectual Property Office)