Those 6 Digits on Your Gold Tell You If It's Real

Every gold piece sold legally since April 2023 must carry a 6-digit alphanumeric HUID.

A genuine hallmark has just three marks: the BIS triangle, the purity number, and the HUID.

Verify the HUID free on the BIS Care app to see the jeweller, purity and hallmarking centre.

916 means 22K, 750 means 18K, 585 means 14K — the number is the percentage of pure gold.

No HUID, an old four-mark stamp, or app details that don't match the bill are red flags.