Where Science Certifies Brilliance
Precision in Every Facet
Authoritative Professional Gemstone Appraisal
Precision in Every Facet
Authoritative Professional Gemstone Appraisal
Enter the report number exactly as printed on your GRA report.
About GRA
Since 2002, the Global Gemological Research Association has stood for one principle: a gemstone's value deserves the protection of independent science.
No trade affiliation
GRA operates free of mining and retail interests. Every grading decision is made solely by our gemologists and backed by peer-reviewed gemology.
36 member laboratories
Across 52 countries, GRA laboratories apply unified standards — classical gemology combined with modern spectroscopy — to every stone we examine.
Public database · 24 / 7
Each GRA report carries a unique number, laser-inscribed on the girdle of the stone and permanently verifiable in our online database.