What is the BIS Hallmark?
The Bureau of Indian Standards (BIS) hallmark is India's official certification of gold purity. Since June 2021, hallmarking has been mandatory for all gold jewellery sold in India. The hallmark guarantees that the gold is of the declared purity and has been tested at a BIS-recognised Assaying and Hallmarking Centre (AHC).
How to Read the Hallmark (HUID System)
Since 2021, BIS uses the Hallmarking Unique ID (HUID) system. Each piece of jewellery has a unique 6-digit alphanumeric code stamped on it. You can verify any hallmarked jewellery on the BIS Care app using this HUID.
Hallmark Components
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BIS Logo — Triangle with BIS inside — confirms BIS certification
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Purity (Fineness) — 916 = 22K, 999 = 24K, 750 = 18K, 585 = 14K
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HUID Code — Unique 6-digit alphanumeric code for each piece
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Jeweller ID — AHC code identifying the hallmarking centre
Gold Purity Reference Table
| Karat | Fineness | Purity | Today's Rate |
|---|---|---|---|
| 24K | 999 | 99.9% | ₹15,086/g |
| 22K | 916 | 91.6% | ₹13,819/g |
| 18K | 750 | 75.0% | ₹10,364/g |
| 14K | 585 | 58.5% | ₹8,084/g |
Why Should You Only Buy Hallmarked Gold?
- Guaranteed purity — what's stamped is what you get
- Better resale value — hallmarked jewellery is accepted at full value
- Legal protection — BIS hallmarking is a government assurance
- Easy verification — check the HUID on the BIS Care app instantly
Find Hallmarked Jewellers Near You
All jewellers listed on JewellersInCity with a hallmark badge have verified BIS certification. Look for the hallmark indicator on store profiles.
Browse Hallmarked Jewellers →