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American Gemological Laboratory (AGL)

AGL has a great professional team led by Chris Smith. They have excellent standards and techniq...

mapMarkerGrey 580 5th Avenue Suite 706 New Y...

Gem Certification and Assurance Lab

GCAL is the only lab to offer us a full guarantee with their grading report. We do not use anyo...

mapMarkerGrey 580 Fifth Avenue, New York, NY...

Diamond Council of America

I earned my Diamontologist diploma from the DCA. It has always helped me get hired in new jobs....

mapMarkerGrey 120 Broadway, Suite 2820 - New...