Knowledge Centre
Your certificate number
Every WGI report and card carries a unique number. Enter it on the Verify Certificate page, or scan the QR code, to open the official online record.
Description
The description identifies the item: its type, metal, weight and stones. For jewellery, centre stones and side stones are described separately.
Grading
Grading results record shape, carat weight, colour, clarity and cut where applicable, using the scales described in our 4Cs guide.
Origin
The report states whether diamonds are natural or laboratory grown. WGI jewellery cards issued for lab-grown diamond jewellery state Laboratory Grown clearly.
Status
The online record shows the certificate's current status. If a certificate has been revoked, the record says so clearly, so you can always rely on what you see online.
Next article
Jewellery Terminology →