Hallmark Information

Reading the BIS hallmark.

Everything stamped on a piece of hallmarked gold — what each mark means, and how to verify it.

A hallmark is a contract — between the maker, the assayer and you.

Section 01

BIS Logo

The BIS triangle confirms the piece was assayed at a BIS-recognised centre.

Section 02

'916' = 22K (91.6% pure). '750' = 18K. '585' = 14K.

Section 03

Identifies the recognised hallmarking centre that tested the piece.

Section 04

Identifies the registered jeweller (Ambaa Gold) responsible for the piece.

Section 05

Six-digit unique ID enabling end-to-end traceability via the BIS Care app.

Key takeaways