Laut Wikipedia, Martin Rapaport begann als Spalter und Grobsortierer in Antwerpen, Belgien. In 1975 Er begann in New York City mit der Vermittlung von Rohdiamanten und geschliffenen Diamanten, In 1978, hat die Rapaport-Preisliste erstellt.
Seit Erstellung der Preisliste, Er ist auch dafür bekannt, zahlreiche Unternehmen in der Diamantenindustrie zu gründen, including an electronic trading network for traders RapNet and INDEX, and diamond-related news in print and web formats.
The Rapaport Diamond Report price list (“Rap List”) is released weekly on Fridays, however it does not necessarily change every week.
It is used as a baseline for pricing for basically all loose diamonds sold as single individual stones (as opposed to diamonds sold in parcels) generally SI3 or better in clarity and K or better in color (although the price list does offer prices for L and lower colors and I1 and lower clarities, they are rarely used in the industry).