Origin Determination

As a special "by request only" service, the AGTA Gemological Testing Center uses the latest analytical techniques and its extensive gemstone database to support a professional opinion concerning the geographic origin of select stones, including ruby, sapphire, emerald, paraíba tourmaline, jadeite and tanzanite.

Sample AGTA GTC Ruby Origin Report. Click on the report for a larger image.

Sample AGTA GTC Emerald Origin Report. Click on the report for a larger image.

Enhancements

A full listing of the AGTA Enhancement Disclosure Requirements can be found here:

• AGTA Gemstone Enhancement Disclosure Requirements

Other Reports

The AGTA Gemological Testing Center offers a full range of gemological services, including the following listed below:

• Colored Gemstone Reports
• Pearl Reports
• Colored Diamond Reports

    For our current fee schedule, see the following links:

• Fee Schedule
• Not an AGTA member? Click here for details on how to join

American Gem Trade Association Gemological Testing Center
18 East 48th St., Suite 502
New York, NY 10017, USA
Tel: 212-752-1717; Fax: 212-750-0930
E-Mail: info@agta-gtc.org; Web: www.agta-gtc.org

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