Contact Us
New York
The AGTA GTC headquarters is located in midtown Manhattan, in the heart of New York’s gem district:
AGTA Gemological Testing Center
18 East 48th Street, Suite 502
New York, NY 10017
USA
Tel: 212-752-1717; Fax: 212-750-0930
E-Mail: info@agta-gtc.org
Hours
Monday–Friday
- Telephone support: 09:00 AM to 4:30 PM EST
- Gem drop off and pick up: 10:00 AM to 4:00 PM EST
California branch
Our California location does not accept direct submissions. All submissions and inquiries should be made through our New York office.
