When you choose a gold pendant, you consider how it looks, what it means to you, and whether you’ll love wearing it. That’s good, but you should also check the gold purity. In India, you can check it using hallmarking.
The BIS hallmark records the gold’s certified purity, while the six-character HUID code lets you look up its hallmarking record through the official BIS Care app. In this guide, we explain what the markings mean, how to verify the HUID, and which details to review before buying a gold pendant.
What Does the HUID Code Tell You About Your Gold Jewelry?
HUID stands for Hallmark Unique Identification. It is a six-character alphanumeric code assigned to a piece of gold jewelry during hallmarking. Its purpose is to give that piece an individual reference within the Bureau of Indian Standards’ hallmarking system.
The distinction matters because many pieces can share the same design and gold grade. Two pendants may both carry an 18K750 mark, but each has its own HUID. The purity mark describes the gold content; the HUID connects the individual piece to its hallmarking record.
When you enter the code into the official BIS Care app, you can review the available record and compare it with the jewelry you are buying. This makes HUID useful when assessing a seller’s description or asking questions about the stated purity. BIS also confirms that the verification feature provides information about the jeweler’s registration number.
The Purity Mark States the Gold Content, While HUID Identifies the Record
A mark such as 18K750 means the gold alloy contains 750 parts of gold per thousand, equivalent to 75% gold. The remaining proportion consists of other metals used in the alloy. Similarly, 14K585 indicates 58.5% gold, while 22K916 indicates 91.6%.
The HUID itself does not tell you the purity simply by looking at its letters and numbers. You need to read the purity mark and check the associated record.
For a gold diamond pendant, this also helps you keep the material checks clear. The hallmark concerns the gold. Questions about the diamond’s origin, carat weight, and grading require separate product information or documentation. Together, these details give you a better basis for assessing the finished piece.
How Do You Read the Hallmark and Gold Purity Grade on Your Jewelry?
On gold jewelry carrying the HUID hallmark format, look for three markings together:
- BIS logo
- Gold purity grade
- Six-character HUID code

The BIS logo identifies the hallmarking system. The purity grade states the gold content in karat and fineness. The HUID gives you the reference to use when checking the hallmarking record.
These markings can be small, particularly on a delicate pendant or chain. Ask the seller to show them under magnification. When purchasing online, request a clear close-up photograph of the markings on the actual piece if you cannot read them after delivery.
|
Purity mark |
Gold grade |
Gold content |
|
14K585 |
14-karat gold. |
58.5% gold. |
|
18K750 |
18-karat gold. |
75.0% gold. |
|
22K916 |
22-karat gold. |
91.6% gold. |
For example, if a pendant is described as 18-karat gold, its purity marking should correspond to that description. You can then verify its HUID and compare the recorded purity with the mark and purchase details.
Remember that a higher gold percentage does not automatically make a piece more suitable for your needs. Gold is alloyed with other metals to influence properties such as hardness and color. The construction of the finished piece matters too, especially around a diamond setting, clasp, or delicate connecting point.
For a DAIMANTÉ pendant, consider the stated gold grade alongside the design, dimensions, setting, and intended wear. If a chain is included, check its material details separately rather than assuming they match the pendant.
How Can You Verify Your Jewelry’s HUID Through the BIS Care App?
Once you have located the HUID, use the official BIS Care app to check its record. BIS provides a feature called Verify HUID for this purpose.

Keep the jewelry or a clear photograph of its markings beside you so you can compare the information carefully.
Step 1: Read the code on the piece
Note all six characters, using magnification if necessary. If a character is unclear, ask the seller to help you read it before entering the code.
Step 2: Open the official BIS Care app
Check that you have downloaded the app published by the Bureau of Indian Standards, then select Verify HUID.
Step 3: Enter the code carefully
Use the HUID marked on your jewelry rather than a code shown in a general product photograph.
Step 4: Compare the returned details
Review the available record, particularly the purity, and check that it agrees with the hallmark and the seller’s description.
Step 5: Clarify any differences
If the code cannot be found or the recorded purity differs from the product description, ask the seller to resolve the discrepancy before completing the purchase.
BIS states that HUID verification provides information about the jeweler’s registration number. The business associated with the hallmarking record may require clarification if you purchased through a different retail brand. Ask your seller to explain that relationship rather than treating an unfamiliar registration detail as proof of a problem.
For an online DAIMANTÉ purchase, check the markings on the piece you receive against its product specifications and invoice. Keeping those details together gives you a clear reference if you need assistance later.
What Should You Do If Your Jewelry’s HUID Cannot Be Verified?
An unsuccessful lookup needs further checking, but it does not establish that the jewelry is counterfeit. Start with the code itself, then ask the seller to help resolve anything that remains unclear.
i) Check the Code Before Trying Again
Small markings can be difficult to read, particularly on a delicate pendant or clasp. Examine the HUID under magnification or ask for a clear close-up photograph. Check all six characters and enter the code from your actual piece rather than a general product image.
ii) Ask the Seller to Resolve the Discrepancy
If the code still cannot be found, share the HUID and a photograph with the seller. Ask them to demonstrate verification using that same code.
If a record appears, compare its purity with the jewelry’s marking and product description. An unfamiliar business registration detail may need an explanation from the seller. A difference in the stated gold purity needs a clear resolution before you proceed with the purchase.
iii) Keep Your Purchase Records Together
If the concern remains unresolved, retain the following records.
- Save clear photographs of the hallmark and a screenshot of the verification result.
- Keep your invoice, order confirmation, and product description.
- Retain your correspondence with the seller, including any explanation provided.
iv) Contact BIS If You Need Further Assistance
If the seller cannot resolve the issue, submit a complaint through the BIS Care app or BIS’s online complaint portal. Include your purchase records and explain exactly what failed to verify or did not match. BIS lists both routes as official complaint channels.
What Should You Check on Your Invoice When Buying Gold Jewelry?
Your invoice provides a written record of what you purchased. Read it alongside the hallmark and product specifications so the description, weight, and purity agree across all three.
BIS guidance specifies that an invoice for hallmarked precious-metal jewelry should include the article description, net precious-metal weight, purity in karat and fineness, and hallmarking charges.
For a diamond pendant, distinguish the net gold weight from the total weight of the finished piece. Diamonds and other components can contribute to the overall weight, so a single figure labeled “weight” may need clarification.
Check these details before accepting the invoice.
- The description should identify the piece you purchased.
- The gold purity should match the jewelry’s marking and product specifications.
- The net gold weight and any separately stated diamond weight should be clearly labeled.
You can also request that the seller record the HUID on your invoice. This keeps the identifier with your purchase details for future reference.
How Do You Check the Gold and Diamond Details in a Diamond Pendant?
A diamond pendant brings two materials into one design, and each needs its own checks. The gold hallmark addresses the precious metal’s purity. Information about the diamond should come from the product specifications and any diamond grading report supplied with the piece.
i) Review the Gold Details Through the Hallmark
Read the gold purity mark, verify the HUID, and compare those details with your invoice. If a chain is included, review its specifications separately. This establishes what is stated about the gold used in each part of your purchase.
ii) Review the Diamond Details Through Its Documentation
For a DAIMANTÉ lab-grown diamond pendant, check how the diamond is described and what documentation accompanies it.
- Confirm that the product description identifies the diamond as lab-grown.
- Check whether the stated carat weight refers to one diamond or the combined weight of several diamonds.
- If a grading report is supplied, review its report number and the diamond details it records.
Ask the seller whether a report covers an individual diamond or whether the accompanying document describes the finished jewelry. This distinction helps you understand exactly what has been assessed.
iii) Bring the Material Details Back to the Finished Piece
Once the gold and diamond information is clear, consider the pendant as you will wear it. Its dimensions, setting, chain, and proportions affect how the design sits and feels.
DAIMANTÉ’s meaning-first approach gives you a starting point for choosing the design. Clear material details help you assess the piece you have chosen with the same care.
Choose a DAIMANTÉ Pendant with Confidence in Its Meaning and Materials
Start with what draws you to the piece. A symbol may connect with a personal milestone, or a design may simply feel right for your style. Then consider its proportions, how it will sit on the chain, and whether it suits the way you intend to wear it.
Give the material details the same attention. Review the stated gold grade, check the hallmark and HUID, and read the diamond information supplied. If something is unclear, ask DAIMANTÉ about the specific pendant before purchasing.
Choosing jewelry should feel considered without becoming difficult. Knowing what the piece means to you and what its documentation tells you gives you a sound basis for making it yours.
Frequently Asked Questions
What does HUID mean in gold jewelry?
HUID stands for Hallmark Unique Identification. It is a six-character alphanumeric code assigned during hallmarking that connects a piece of jewelry with its hallmarking record. Read it alongside the BIS logo and purity mark.
How can I check a HUID number?
Enter the code marked on your piece into the Verify HUID feature in the official BIS Care app. Compare the available details with the jewelry’s purity mark and product description. Ask the seller to resolve any discrepancy.
Does a HUID hallmark mean the jewelry is pure gold?
Hallmarked jewelry can contain a gold alloy. Its purity grade tells you the proportion of gold. For example, 18K750 indicates 75% gold, while 14K585 indicates 58.5%. The HUID identifies the record associated with the piece.
Does HUID guarantee a particular resale price?
HUID does not set a resale price. The amount a buyer pays can depend on gold weight, purity, prevailing prices, deductions, and purchase policies. Review the seller’s written buyback or exchange terms separately.
Does every gold item require a HUID hallmark?
Mandatory hallmarking requirements have defined coverage and exemptions, so a blanket statement covering every gold item would be misleading. Check current BIS guidance for the item and seller concerned, and ask for an explanation if newly purchased jewelry does not carry a HUID.