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Alexandrite

Tsarstone collectors guide

identification report

1. 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
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2. 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
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. 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
/directory/laboratories/agta-gemological-testing-center-wdd-003-00019.html
5. SSEF
SSEF laboratory offers analysis of precious stones and issue test reports for diamonds, coloured stones and pearls. It was recognized in 1978 by the International Confederation of Jewellers and Goldsmiths (CIBJO and also a member of the International Colo
HTML, 65 Kb, 2009-03-15 03:08:12
/directory/laboratories/ssef-wdd-003-00018.html
6. 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
7. 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
8. The Gem and Jewelry Institute of Thailand
IT Gem Testing Laboratory (GIT-GTL), has been accredited by The World Jewellery Confederation (CIBJO) as the CIBJO Registered Laboratory since May 2000.
HTML, 65 Kb, 2009-03-15 02:46:44
/directory/laboratories/the-gem-and-jewelry-institute-of-thailand-wdd-003-00015.html
9. 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
10. The Russian MSU Gemological Center
Found at 1995, MSU Gemological Center is a part of MSU Department of Geology and co-founders of the Russian Gemological Society (2000), the Union of Modern and Antique Jewelry Appraisers, and member of the Russian Diamond Chamber.
HTML, 65 Kb, 2009-03-15 02:33:25
/directory/laboratories/the-russian-msu-gemological-center-wdd-003-00013.html
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