India
India's gold is independently assayed and stamped at BIS centres, then given a six-digit HUID — a tamper-traceable identity you can check in an app.
In the atlas: Zaveri Bazaar · Johari Bazaar & MI Road
Independent assay
Voluntary BIS gold hallmarking began in 2000; it became mandatory in 2021, with gold tested at BIS-recognised Assaying & Hallmarking Centres before sale.
Compulsory BIS assay + traceable HUID for gold (since 2021).
What you'll see struck
BIS Standard Mark
Bureau of Indian Standards
A triangular mark certifying the piece was assayed at a BIS-recognised centre.
Purity grade
Caratage + fineness
The caratage and millesimal fineness together, e.g. 22K916, 18K750, 14K585.
HUID
6-digit traceable ID
A unique six-character alphanumeric code, introduced July 2021 and required since April 2023, linked to the jeweller and centre.
Fineness
- Gold (IS 1417)
- 585 (14K) · 750 (18K) · 833 (20K) · 916 (22K) · 958 (23K) · 995 (24K)
- Silver (IS 2112)
- 800 · 835 · 900 · 925 · 970 · 990
Decode a mark you've found
Seen a number struck inside a piece? Read what it means, and how India marks it.
Heading there to buy? These district buyer's guides show how to read a hallmark at the counter, what a fair price looks like, and how to spot a fake.
- Hallmarking FAQ Verified
- Brief on Hallmarking Verified
* Silver hallmarking and a 9K gold standard were reported new for 2025; treat the silver-mandate timeline as provisional.
A reference guide, not an authentication service. Marks vary by date and metal; consult the relevant assay office or standards body for definitive identification.