Buying Guide
How to Read a Gemstone Certificate
Published 12 May 20266 Min Read
Maison Study Series
A gemstone certificate is issued by an independent laboratory and documents the stone's identity, weight, measurements, and any treatments it has undergone. Reputable labs include GIA, IGI, and GRS.
Start with the identification line — it confirms the species (e.g. 'Natural Sapphire'). Next, check the weight in carats and the measurements in millimetres, and match them against the listing.
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