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Alexandrite

Tsarstone collectors guide

identification report

1. AGTA Gemological Testing Center
The AGTA Gemological Testing Center is the natural coloured gemstone industry’s premier independent laboratory providing the industry and the public with a complete range of services, including gemstone identification, origin determination and pearl ide
HTML, 65 Kb, 2009-03-15 03:11:40
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2. AIGS Gemological Laboratory
First professional gemological laboratory to be established in Asia in 19978, - The AIGS Gemological Laboratory is a private, independent gemological laboratory, member of the Thai Gem and Jewelry Traders Association (TGJTA), and The International Colored
HTML, 65 Kb, 2009-03-15 02:39:58
/directory/laboratories/aigs-gemological-laboratory-wdd-003-00014.html
3. American Gemological Laboratories
American Gemological Laboratories is a unit of Collectors Universe, the leading provider of value-added authentication and grading services for high-value collectibles and gemstones, which was founded in 1986 and publicly traded since 1999. In 1977, Ameri
HTML, 65 Kb, 2009-03-15 03:14:21
/directory/laboratories/american-gemological-laboratories-wdd-003-00020.html
4. European Gemological Laboratory
As a member of the EGL USA Group, European Gemological Laboratory (EGL) is a full-service lab and offers a comprehensive array of gem identification, evaluation reports including customized reports of identification for rough and polished diamonds as well
HTML, 65 Kb, 2009-03-15 02:22:20
/directory/laboratories/european-gemological-laboratory-wdd-003-00010.html
5. Gem Studies Lab
GAA was formed in Sydney, on the 29th October 1945, the Association has been responsible for producing Australia’s gemmologists by educating and updating members of the gem and jewellery industry and the general public, about all aspects of gemstones an
HTML, 66 Kb, 2009-03-15 02:18:56
/directory/laboratories/gem-studies-lab-wdd-003-00009.html
6. Gemmological Association of Great Britain
Gem-A, which began as a Gemmological Committee of the National Association of Goldsmiths, first introduced a gemmology qualification in 1908 in order to encourage jewelers to understand the gems they were selling and to identify the fakes.
HTML, 65 Kb, 2009-03-15 03:22:40
/directory/laboratories/gemmological-association-of-great-britain-wdd-003-00022.html
7. Gemological Institute of America
GIA is considered the world's most trusted name in diamond grading and gemstone identification. GIA’s D-to-Z colour-grading scale and Flawless-to-I3 clarity-grading scale are recognized by gem and jewellery professionals everywhere. And, by extension, t
HTML, 65 Kb, 2009-03-15 03:18:30
/directory/laboratories/gemological-institute-of-america-wdd-003-00021.html
8. GemResearch Swisslab
Private gemological research company focused on the characterization of high-quality gems from newly opened mines.
HTML, 65 Kb, 2009-03-15 03:01:18
/directory/laboratories/gemresearch-swisslab-wdd-003-00016.html
9. Gubelin Gemological Laboratories
Dr. Eduard J. Gubelin, one of the forefathers of modern gemology, and who was a Founding Organizing Member as well as an Honorary Member of the International Colored Gemstone Association (ICA), passed away in Lucerne, Switzerland in March at the age of 91
HTML, 66 Kb, 2009-03-15 03:05:18
/directory/laboratories/gubelin-gemological-laboratories-wdd-003-00017.html
10. Hong Kong Gems Laboratory
Established in 1987, Hong Kong Gems Laboratory is well equipped and recognized by gemologists and industry professionals. Full-service lab offers FTIR spectrophotometerservice, which provides evidence for jadeite jade and diamond, corundum, emerald and ot
HTML, 65 Kb, 2009-03-15 02:25:21
/directory/laboratories/hong-kong-gems-laboratory-wdd-003-00011.html
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