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As Diwali and Dhanteras approach, many people across India prepare to buy gold — a tradition believed to bring prosperity, peace, and good fortune to homes. But before you make that purchase, it’s important to ensure that the gold jewellery you’re buying is genuine and pure. With gold prices soaring, even a small case of impurity or adulteration can lead to major financial loss. Here’s how you can easily check the purity of your gold and make a safe investment.

Check Purity Through the BIS Hallmark

The most reliable way to check the purity of gold jewellery is by looking for the BIS hallmark. Every hallmarked gold item carries a tiny stamp that tells you how pure the gold is. This hallmark contains three crucial pieces of information —

1. The Karat (Purity) of Gold – such as 22K, 20K, or 18K.

2. The BIS Logo – confirming the jewellery has been tested and certified.

3. A Unique HUID Number – a 6-digit alphanumeric code that acts as the jewellery’s digital ID.

You can easily verify this HUID number through the BIS Care App, available on Android and iOS. Just enter the code, and the app will show the certification details. If the number doesn’t match or appears invalid, it’s best to avoid buying that piece.

Understanding Gold Karats: 24K, 22K, or 18K

Not all gold jewellery has the same purity level. 24-karat gold is the purest form of gold, containing 99.9% gold, but it’s too soft for crafting ornaments. That’s why 22-karat gold (91.6% purity) is commonly used for jewellery, offering both shine and durability.

For buyers looking for more affordable options, 18-karat gold, containing 75% gold mixed with metals like copper or silver, is a practical choice. It’s slightly less expensive but more durable for daily wear. Knowing the difference helps you make an informed decision based on your needs and budget.

Don’t Just Trust the Jeweller — Verify Yourself

Experts recommend not relying solely on what the jeweller tells you about purity. Verification takes less than a minute — simply check the HUID number on the BIS Care App. This extra step ensures peace of mind and prevents fraud.

If you’re purchasing jewellery from a new or unknown jeweller, this verification becomes even more critical. For high-value purchases, purity testing should be your top priority.

Always Ask for a Proper Invoice

Once you’ve chosen your piece, make sure you get a detailed bill from the jeweller. The invoice should clearly mention:

• Current gold rate

• Making charges

• GST amount

• Total weight of the jewellery

Typically, making charges range between 8% and 20% of the gold’s value. However, intricate designs or handcrafted ornaments may cost more. If the charges seem unusually high, don’t hesitate to ask your jeweller for clarification. Ideally, you should inquire about making charges before finalizing the jewellery to avoid surprises later.

Final Tips Before You Buy Gold

• Purchase gold only from BIS-certified jewellers.

• Verify the HUID number using the BIS Care App.

• Understand karat differences to choose the right purity level.

• Always collect and keep the purchase invoice for future reference.

• Compare prices and charges among jewellers before making your final decision.

Buying gold during festivals like Diwali or Dhanteras is a cherished Indian tradition, but ensuring the purity of your gold makes the purchase even more auspicious. A few quick checks can protect your hard-earned money and guarantee that what shines on you is truly pure gold.