How to Sell Certified Diamonds in London: The Essential Valuation Guide

Selling a certified diamond in London requires a clear understanding of international wholesale markets versus secondary retail markdowns. Whether holding a classic solitaire engagement ring or a loose investment stone, knowing how dealers price diamonds empowers you to secure true fair market value.

The Global Wholesale Benchmark: Rapaport Diamond Report

The international trade in polished diamonds is governed by a singular, universally recognized benchmark: the Rapaport Diamond Report. Published weekly in New York, the Rapaport price list establishes baseline wholesale cash values per carat for round brilliant and fancy shape stones across every combination of color (D to M) and clarity (IF to I3).

Avoiding Retail Overhead and Middlemen

When you sell a diamond to a traditional high street pawnbroker or retail boutique in London, substantial markups and retail overhead deductions are often applied. Obagem London operates as an accredited private gemological advisory, acquiring stones directly against global wholesale pricing without intermediaries.

The Critical Role of Grading Reports (GIA, AnchorCert, HRD)

To maximize your return, always present your original grading report from the Gemological Institute of America (GIA), AnchorCert Birmingham, or HRD Antwerp. If your stone is uncertified, our certified gemologists perform complete in-person grading in our Mayfair or Hatton Garden salons.

Discreet Settlement and Immediate Payment

Payment is executed immediately upon agreement via bank wire transfer in GBP (£), EUR (€), or USD ($), accompanied by formal bill-of-sale documentation under UK commercial law.