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Article: Thai Gem treaters dispute labs. (Gem Notes).(Brief Article)
- Article from:
- Jewelers Circular Keystone
- Article date:
- August 1, 2002
- Author:
CopyrightCOPYRIGHT 2002 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The Chanthaburi (Thailand) Gem and Jewelry Association (CGJA) met with local gem heaters on June 8 to develop a response after two major gem labs--the American Gem Trade Association's Gem Testing Center (AGTA GTC) and the Gemological Institute of America's Gem Trade Laboratory (GIA GTL)--decided to add the term "bulk diffusion" to descriptions of the new heat-treated yellow and padparadscha-like sapphires coming out of Thailand.
Following the daylong meeting, CGJA announced that it disputed the findings of the four international labs at the forefront of the controversy--AGTA GTC, GIA GTL, Gubelin Gem Lab, and SSEF. Although Gubelin and SSEF call the new enhanced ...