Tsarstone collectors guide
Provides identification and origin reports and other colour gemstone services, including testing for beryllium in sapphire, natural origin of colour in diamonds and country of origin for sapphires, rubies and alexandrites.
Homepage | Address | Contact |
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www.agta-gtc.org/ |
18 East 48th Street Suite 502 New York 10017 United States of America |
N: Harry Freidman T: 212-752-1717 F: 212-750-0930 E: info@agta-gtc.org |
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 identification. The laboratory, located in New York City, is equipped with the latest, technologically advanced, investigative equipment.
Sponsored by Multicolour Gems Ltd Design and maintenance by Netcomposite®