BIS Hallmark & HUID: How to Check Your Gold Is Genuine — AT Jewels
Sunday, 08 November 2026 · A weekend note from AT Jewels
BIS Hallmark & HUID: How to Check Your Gold Is Genuine
In short: Every hallmarked gold piece in India now carries three things — the triangular BIS logo, a purity grade (like 22K916, 18K750 or 14K585), and a six-digit alphanumeric HUID (Hallmark Unique Identification). To confirm a piece is genuine, download the free BIS Care app, tap “Verify HUID”, and enter that six-digit code — it shows the jeweller, the purity and the registration behind your jewellery. Hallmarking is mandatory for gold jewellery sold in India, so a trustworthy piece will always show these marks.
What a hallmark actually is
A hallmark is the Bureau of Indian Standards' (BIS) official stamp that certifies the purity of your gold. Think of it as a government-backed guarantee: when you see the BIS mark on a piece, an independent assaying and hallmarking centre has tested the metal and confirmed it really is the purity the jeweller claims. For a buyer, it turns a promise at the counter into something you can verify yourself — which is exactly why mandatory hallmarking was brought in to protect ordinary families buying gold for weddings and festivals.
The three marks to look for
On a correctly hallmarked piece you will find three things stamped (or laser-marked) on the jewellery:
1. The BIS logo — a small triangular mark. This is the standards mark; without it, a piece is simply not hallmarked.
2. The purity grade — the karat and its fineness. Common ones are 22K916 (22-carat, 91.6% pure gold), 18K750 (18-carat, 75.0% pure) and 14K585 (14-carat, 58.5% pure). The number after the K is the percentage of pure gold, written as parts per thousand.
3. The six-digit HUID — a unique alphanumeric code (for example, a mix of letters and numbers like AZ4567) assigned to that single piece of jewellery. No two pieces share a HUID, which is what makes it possible to trace and verify each item individually.
What is HUID, and why it matters
HUID stands for Hallmark Unique Identification. Since the rules were tightened, the six-digit HUID has become the heart of the system — it is registered against the jeweller, the purity and the hallmarking centre in the BIS database. Because it is unique to your piece, it is far harder to fake than an old-style stamp. For you as a buyer, it means the purity on the bill is not just something you have to take on faith; it is a number you can check against an official record in seconds.
How to verify it yourself in under a minute
You don't need to be an expert or visit a lab. Here is the simple route any buyer can follow:
Step 1: Install the free BIS Care app from the Google Play Store or Apple App Store (it is published by the Bureau of Indian Standards).
Step 2: Open the app and choose the option to verify a hallmarked item / HUID.
Step 3: Enter the six-digit HUID stamped on your jewellery.
Step 4: The app displays the registered details — the jeweller's name, the purity (karat), and the hallmarking centre. If these match your piece and your bill, you can buy with confidence. If a HUID doesn't come up or the details don't match, that is your cue to pause and ask questions.
Keep your invoice too: a proper bill should mention the purity, the net gold weight, making charges and GST separately, so you always have a paper trail alongside the hallmark.
A few honest pointers from the counter
The hallmark certifies purity, not price — two 22K pieces of the same weight can still cost differently because of design, wastage and making charges, which vary from piece to piece. GST on gold jewellery is 3% (indicative and subject to change). And a quick word of reassurance: on very small or very delicate items, marks can be tiny and placed discreetly so they don't spoil the design, so if you can't spot them at a glance, just ask us to point them out — we are always happy to show you.
This weekend's featured pieces
Why buyers love these: each piece carries its own BIS hallmark and HUID, so the purity on your bill is something you can verify yourself. They are crafted to catch the light without being fussy, and our team is always glad to show you exactly where the hallmark sits before you decide.
Frequently asked
What is the HUID number in gold jewellery?
HUID (Hallmark Unique Identification) is a unique six-digit alphanumeric code stamped on each hallmarked gold item in India. It is linked in the BIS database to that specific piece's purity, the jeweller and the hallmarking centre, so every item can be traced and verified individually.
How do I check if my gold is BIS hallmarked?
Look for three marks on the piece — the triangular BIS logo, the purity grade (such as 22K916, 18K750 or 14K585), and the six-digit HUID. Then download the free BIS Care app, choose “Verify HUID”, and enter the code to see the registered jeweller and purity. If the details match, your gold is genuinely hallmarked.
Is hallmarking mandatory for gold jewellery in India?
Yes. Hallmarking of gold jewellery is mandatory across India, and sold pieces should carry the HUID. A reputable jeweller will always hallmark and will happily point out the marks and HUID for you.
— Nitin Bardia / AT Jewels
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Disclaimer: This note is general information about jewellery for buyers and is not financial advice. Designs, availability and prices shown are indicative and subject to change. The binding price for any gold purchase is AT Jewels' live counter rate at the time of billing. Please verify purity and hallmarking details at the time of purchase.