Built by a diamond dealer

Rafi Mizrahi is a second-generation diamond dealer with 26 years in the trade, from a family that buys, inspects and trades natural diamonds. Rafi is a member of the Israel Diamond Exchange in Ramat Gan and the Diamantclub van Antwerpen.

Dealers price diamonds every day against the Rapaport Price List, then adjust for what the grading report and the stone itself show: cut and proportions, where the inclusions sit, fluorescence. Buyers rarely see that side. They see a retail tag or a replacement-value appraisal, and have no way to tell whether the number is fair. DiamondCheck AI was built to close that gap.

We start from the diamond's GIA grades, read from GIA's records when you enter the report number, or from the certificate when you upload it. We price it against the Rapaport benchmark for its shape, carat, color and clarity, then apply the deductions a dealer would for the things the grades alone don't capture.

The result is our opinion of fair market value, based on US wholesale market data in US dollars. It isn't a formal appraisal or an offer to buy or sell. Retail prices are normally higher, and insurance appraisals higher still. See wholesale vs. retail diamond value.