March 12, 2026 · 5 min read

GIA, HRD, IGI certificates: what is the difference?

The three main diamond certification labs compared: criteria, reliability, resale value.

Three labs dominate worldwide diamond certification: GIA, HRD and IGI. Here is how they differ and which to prefer for resale.

GIA

Founded 1931, the absolute world reference. The most liquid asset for diamond resale.

Founded 1973 in Antwerp. Excellent for European market resale.

More recent and international. Leading certificates for lab-grown diamonds.

For a natural diamond of 0.50 ct or more, prefer GIA. HRD is also excellent in Europe. IGI is a meaningful plus versus no certificate.

Confidential appraisal

Describe your piece. Our diamond dealer replies within 24 business hours with a price range.

Every step to sell a diamond in Tel Aviv at the right price: preparation, appraisal, certificates, negotiation, payment.

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