Introduction
When buying gold jewellery, many people check only the design and price. But the most important thing to check is the BIS hallmark. BIS hallmark proves that the gold jewellery meets purity standards set in India.
If you know how to read BIS hallmark on gold jewellery, you can avoid fake gold, overpricing, and purity fraud.
In this guide, you will learn the 5 important numbers and marks printed on hallmarked jewellery in simple language.
What is BIS Hallmark?
BIS stands for Bureau of Indian Standards. It is the national standards authority of India.
A BIS hallmark on jewellery confirms:
- Gold purity is tested
- Jewellery follows Indian standards
- Item is certified by authorised hallmarking centre
- Buyer gets better trust and resale value
How to Read BIS Hallmark on Gold Jewellery is important before buying.

5 Important Numbers and Marks on BIS Hallmark Jewellery
| Hallmark Mark | Meaning | Example |
|---|---|---|
| BIS Logo | Official BIS symbol | Triangle logo |
| Purity Number | Gold purity in parts per thousand | 916 |
| Carat Mark | Gold carat level | 22K |
| HUID Number | Unique 6-digit alphanumeric code | A1B2C3 |
| Jeweller ID | Registered jeweller mark | Store code |
1.Purity Number – Most Important Number
This number tells how pure the gold is.
| Purity Number | Carat | Gold Purity |
|---|---|---|
| 999 | 24K | 99.9% |
| 958 | 23K | 95.8% |
| 916 | 22K | 91.6% |
| 875 | 21K | 87.5% |
| 750 | 18K | 75.0% |
| 585 | 14K | 58.5% |
Example:
If jewellery has 916, it means 22K gold.
2. BIS Logo
The BIS logo shows that the jewellery is hallmarked under BIS standards.
Always check the BIS symbol clearly stamped on jewellery
3. Carat Mark
Some jewellery also shows carat mark like:
- 22K
- 18K
- 14K
This helps buyers understand jewellery quality quickly
4. HUID Number
HUID means Hallmark Unique Identification Number.
It is a unique 6-digit alphanumeric code given to every hallmarked jewellery piece.
Why HUID is Important?
- Helps trace jewellery authenticity
- Prevents fake hallmark misuse
- Increases buyer trust
5. Jeweller Identification Mark
Registered jewellers have their own code or mark.
This identifies who sold the jewellery.
Where to Find BIS Hallmark on Jewellery?
Usually found on:
- Ring inner side
- Necklace clasp
- Chain hook
- Bangle inner side
- Earrings back lock area
Use magnifying glass if needed.
This guide explains How to Read BIS Hallmark on Gold Jewellery easily
How to Check BIS Hallmark Before Buying Gold
| Step | What to Check |
|---|---|
| 1 | Look for BIS logo |
| 2 | Check purity number (916/750 etc.) |
| 3 | Verify HUID code |
| 4 | Ask for proper bill |
| 5 | Buy from trusted jeweller |

Common Mistakes Buyers Make
- Checking only design
- Ignoring hallmark stamp
- Not asking for invoice
- Buying very cheap gold offers
- Not checking purity number
Why BIS Hallmarked Gold is Better
- Trusted purity
- Better resale value
- Safer purchase
- Less fraud risk
- Government standard certified
Expert Tip
For daily wear jewellery, many people choose 22K (916).
For diamond or modern designer jewellery, 18K (750) is common.
Why Gold Buyers in Ambala Should Check Hallmark
If you are buying or selling gold in Ambala, always choose a trusted gold testing and hallmark-checking center for accurate purity verification.
How to Verify BIS Hallmark Online
Buyers can also verify hallmark jewellery details through official BIS resources. Always match the HUID number, purity mark, and invoice details before making a purchase. This gives extra confidence and protects you from fraud.
Tips Before Buying Gold Jewellery
- Always check BIS logo clearly
- Confirm purity number like 916 or 750
- Ask for proper purchase bill
- Buy from trusted jewellers only
- Compare making charges before payment
Why Hallmark is Important for Resale
Hallmarked jewellery often gets better trust during resale or exchange because purity details are clearly mentioned. It can also make valuation easier.
Read more: Gold Testing Guide – Gold Purity & Hallmarking Process Explained
Conclusion
Knowing how to read BIS hallmark on gold jewellery can save you money and protect you from fraud. Always check the BIS logo, purity number like 916, HUID code, and bill before purchasing. Many buyers search “How to Read BIS Hallmark on Gold Jewellery online.
A few seconds of checking can help you make a safe gold investment.
Visit BIS official website for hallmark details.
FAQs
1. What does 916 mean on gold jewellery?
916 means the jewellery is 22K gold with 91.6% purity.
2. Is BIS hallmark compulsory in India?
Yes, many gold jewellery categories require BIS hallmarking in India.
3. What is HUID in hallmark gold?
HUID is a unique identification code for hallmarked jewellery.
4. Is 750 gold real?
Yes, 750 means 18K gold with 75% purity.
5. Which is better 916 or 750 gold?
916 is purer than 750. 750 is stronger and often used in designer jewellery.
