Gemlab Store Update

New Items in the Store

After 3 months we finally received the shipment with new gem testing equipment.

Please visit the store to check prices; we offer free shipping in North America and a flat-rate for certain countries. Here are some of the highlights:

Gem Instruments

GL Digital Refractometer

This new desk-top unit with microprocessor works like a gem refractometer.

It is actually a reflectivity meter which converts the measurements into a R.I.; it has a testing range from RI 1.30 – 2.99.

Recommended for gemstones above the RI 1.80 limit for a refractometer

Refractive index (RI) and Reflectivity (%) are shown on a LCD display.


gl prism spectrolite package GL Prism SpectroLite Package

GL Prism SpectroLite Package

Portable package contains GL Prism Spectroscope, Amici prism, fixed slit, adjustable focus


gl led refractometer ii thumb GL LED Refractometer II

GL LED Refractometer II

This new compact and portable unit with superior optics has several options for illumination:

– built-in switchable LED light

– opening for external light sources such as flashlight, etc

– external GL 5 LED Light Box (included)


gl 5 led light box thumb GL 5 LED Light Box

GL 5 LED Light Box

This light source is composed of 5 white LED bulbs powered by three AAA batteries.It is compatible with the GL Portable Polariscope, the GL Darkfield 10x Loupe and other instruments. Ideal for direct observation using a loupe.


GL Gem Spectrometer

LOWER PRICE: The price of the basic GLGemSpec system has been reduced to $ 1,495; we now accept PayPal payments.

Visit the Gemlab Instruments Store.

Recommended Books

exotic2 CIGem News Winter 2011

Exotic Gems (Volume 2)

by Renée Newman is a full-color guide to identifying and evaluating alexandrite, andalusite, chrysoberyl, cat’s-eye, kyanite, sillimanite, common opal, fire opal, dinosaur gembone, tsavorite, rhodolite, spessartine, demantoid, malaya, grossular.and other garnets. This is the second in a series of books that explores the history, lore, properties, qualities and geographic sources of lesser-known gems.

Paperback / 6″ x 9″ / 154 pages, 408 color photos


diamond grading abc handbook of diamond grading loopthumb Books

Diamond Grading ABC: Handbook of Diamond Grading

Verena Pagel-Theisen, Hardcover, 2007, 322pp

This book is a handy reference for diamond grading. In this revised, enlarged, and updated (9th) edition, the author has included in-depth information about the technical and scientific changes which have taken place in the diamond industry. The Manual remains a practical guide to diamond grading that is a useful tool for every diamond dealer, jeweler and gemologist.


This is the pre-scribed text-book for GEM 210 Diamond Grading course.

B.C. Gem and Mineral Show

  • Date: April 8 – 10, 2011
  • Location: Abbotsford, BC, Canada
  • BCGemShow GL Newsletter March 2011

    Visit the C.I.G. booth with book and instrument display.

    Study stones and interesting gemstones for collectors.

    More Info:

    Books and Gem Instruments Sale (up to 50% off only during the show), special C.I.G. display “Vintage Gem Testing Instruments”, demonstrations and more.

    GEM 130 Introduction to Diamonds

    In this course you will learn everything you need to know about diamonds. Sell more and answer customer questions with confidence. Introduction to diamond grading and jewellery fashion.

    dia1 Vancouver Course Schedule

    • Course GEM 130-1 Fri, April 15, 6:15 – 9:00 p.m., Sat/Sun, April 16/17, 10 a.m – 4:30 p.m. (weekend class, Richmond, B.C.) – Register by March 31
    • $495/ 6 units includes text-book “Diamond Buying Guide”; Fred Ward Series “Diamonds” and exam fees (no HST)

    This course is also available by correspondence. To register on-line go here.

    GEM 210 Diamond Grading

    • Course GEM 210-2 Mon, May 23, 12:30 – 4:30 p.m., Tue/Wed, May 24/25, 10 a.m. – 4:30 p.m. (midweek class, 2 1/2 days, Richmond, B.C.)
    • $995 includes home study lessons (must be completed prior to practical class), grading projects with actual diamonds, study materials and exam fees (no HST) but does not include the textbook “Diamond Grading ABC: Handbook of Diamond Grading” by Pagel Theisen, 2007 (price $ 80)
    • Prerequisite: GEM 130 Introduction to Diamonds

    To register on-line go here or call (604) 530-8569.

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

    © 2011 Gemlab Research & Technology, Vancouver, Canada