Understanding BIS Hallmark
Everything you need to know about the Bureau of Indian Standards hallmark for gold jewellery.
What is BIS Hallmark?
BIS Hallmark is a quality certification mark given by the Bureau of Indian Standards (BIS), the national standards body of India. It certifies that a piece of gold jewellery conforms to the standards of purity specified by the BIS.
Since June 2021, hallmarking of gold jewellery is mandatory in India. This ensures consumers get exactly the purity they pay for.
Components of BIS Hallmark
BIS Logo
The triangular BIS logo confirms the jewellery is certified by the Bureau of Indian Standards.
Purity Grade
Indicates the purity level: 999 (24K), 916 (22K), 750 (18K), or 585 (14K).
HUID Number
6-character alphanumeric code unique to each piece, enabling traceability.
Purity Grades Explained
| Grade | Karat | Purity | Common Use |
|---|---|---|---|
| 999 | 24K | 99.9% | Coins, bars |
| 916 | 22K | 91.6% | Traditional jewellery |
| 750 | 18K | 75% | Diamond jewellery |
| 585 | 14K | 58.5% | Daily wear |
| 375 | 9K | 37.5% | Budget jewellery |
How to Verify Hallmark
Verify Online Using HUID
You can verify any hallmarked jewellery using the HUID number on the BIS website or mobile app.
Locate the 6-character HUID on your jewellery
Visit the BIS Care app or website
Enter the HUID to see purity, jeweller details, and certification date
Warning Signs to Watch For
Benefits of Buying Hallmarked Jewellery
Shop With Confidence
All jewellers on GoldJewellers are verified for BIS Hallmark certification. Browse our collection of authentic, hallmarked jewellery.