What is Hallmarking and Why Does It Matter?
A hallmark is an official mark that certifies the purity of a precious metal. In India, the Bureau of Indian Standards (BIS) is the government body responsible for this certification. Since June 2021, it has become mandatory for jewellers in specified
districts across the country to sell only hallmarked gold jewellery. This rule was implemented to protect consumers from being sold lower-purity gold than what is claimed, ensuring you get the quality and value you deserve. Think of it as a quality assurance stamp that guarantees the gold's fineness.
Decoding Karat and Fineness: The Numbers Explained
Gold purity is measured in two main ways: karats (K) and fineness. Karat measures the ratio of pure gold to other alloys in a piece of jewellery out of 24 parts. 24K gold is the purest form (99.9% pure), but it's too soft for intricate jewellery. To add strength and durability, it's mixed with metals like silver, copper, or zinc. This brings us to the numbers in the headline. '22K' means the item has 22 parts of pure gold and 2 parts of other metals. The number '916' represents fineness, which is purity measured in parts per thousand. So, 22K gold is 91.6% pure, hence the '916' mark. They are two different ways of saying the same thing. Here's a quick guide: 22K916: 91.6% pure gold, the standard for traditional Indian jewellery. 18K750: 75% pure gold, often used for diamond and gemstone jewellery because it's harder. * 14K585: 58.5% pure gold, used for more affordable and durable daily wear items.
The Three Modern Signs of a BIS Hallmark
Since 2021, the BIS hallmarking system has been updated and simplified. When you buy new gold jewellery today, you should look for three specific marks, which are often tiny and may require a magnifying glass to see clearly. These are the mandatory signs of an authentic hallmark. The first is the iconic triangular BIS logo, which confirms it has been certified by the national standards body. The second mark is the purity and fineness grade, such as '22K916' or '18K750'. The third and most recent addition is the Hallmark Unique Identification (HUID) number.
The HUID Number: Your Digital Guarantee of Purity
The Hallmark Unique Identification (HUID) is a six-digit alphanumeric code (a mix of letters and numbers) that is unique to each piece of jewellery. It's laser-engraved onto the item at the Assaying and Hallmarking Centre. This code serves as a digital fingerprint, offering complete traceability. It links your specific piece of jewellery to a secure BIS database, which contains details about the item, its purity, and the jeweller who had it hallmarked. The primary purpose of the HUID is to bring transparency to the process and eliminate the possibility of fake hallmarking.
How to Verify Your Gold with the BIS CARE App
The most powerful tool for a gold buyer today is the BIS CARE mobile app, available for both Android and iOS devices. You can use it to verify your jewellery's HUID in seconds. Simply download the app, open the 'Verify HUID' feature, and enter the six-digit code from your jewellery. The app will display all the recorded details: the jeweller, the hallmarking centre, the type of article, and its purity. If the details shown on the app match your jewellery and the bill, you can be confident in your purchase. If there's a mismatch, it's a major red flag, and you can even file a complaint through the app itself.
