Authenticity verification
Verify your diamond certificate
Enter the certificate number and our system will automatically recognize the gemmological institute and redirect you to the official verification page.
Gemmological institutes
Gemological Institute of America
The oldest and most prestigious gemmological institute in the world. Creator of the 4C diamond grading standard. Online reports available since 1986.
International Gemological Institute
The largest independent gemmological laboratory in the world, headquartered in Antwerp. Certificates verifiable online since 2000.
HRD Antwerp
Hoge Raad voor Diamant — the European leader in diamond certification, headquartered in Antwerp. Online database available since 2005.
How to verify a diamond certificate?
Every diamond offered by M&M GOLD comes with a certificate from one of three leading gemmological institutes: GIA (Gemological Institute of America), IGI (International Gemological Institute) or HRD Antwerp (Hoge Raad voor Diamant).
A diamond certificate is an independent assessment of a stone's quality according to the international 4C standard: Carat (weight in carats), Cut, Color and Clarity. The document confirms the stone's authenticity and its parameters.
To verify a certificate, simply enter its number in the form above. Our system will automatically recognize the institute based on the number format and redirect you to the official verification page, where you will find the full details of your diamond.
Supported institutes
- GIA — 10-digit report number
- IGI — 9-digit report number
- HRD Antwerp — 12-digit report number
Why verify your certificate?
Verifying a certificate online is the simplest way to confirm that a diamond is authentic and that its parameters match those declared. Every reputable jeweler should provide the certificate number — at M&M GOLD we do this for every product.