Hallmark
The official purity stamp on gold jewellery: the BIS logo, a purity grade and a unique HUID code.
A hallmark is the official stamp that certifies how pure a piece of gold jewellery is. It has three marks: the BIS logo, a purity grade such as 22K916, and a unique HUID code you can check in the BIS CARE app. Learn to read it in gold hallmark and HUID.
Questions people ask
What is a hallmark on gold?
A stamp, applied by a BIS-recognised testing centre, that certifies the gold's purity. Since 1 July 2021 it has three marks: the BIS logo, the purity grade, and a six-character HUID code.
Is hallmarking mandatory?
Yes, for gold jewellery and artefacts sold in the districts the government has notified, starting with 256 districts on 23 June 2021 and widened since. Check bis.gov.in for whether your district is covered.
What does 916 mean in a hallmark?
It means the gold is 91.6% pure by weight, which is 22 carat. The mark appears as 22K916.
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