
Key Highlights
- Hallmarked gold is certified by BIS, ensuring purity and authenticity, making it a safer choice for buyers and investors.
- KDM gold, soldered using cadmium, poses health hazards and is now replaced by BIS-certified gold due to safety concerns.
- 916 gold refers to 22-karat gold (91.6% purity) and is commonly used in jewellery due to its strength and durability.
When buying gold jewellery, you often hear terms like 916 gold, KDM, and hallmarked gold. But what do they mean, why do prices vary, and how do you ensure you are making the right choice?
This guide breaks down the key differences to help you buy gold with confidence.
Understanding Different Types of Gold
Here is a quick overview of what different types of gold mean:
1. Hallmark Gold
Hallmark Gold refers to gold jewellery or bullion certified by an authorised body for purity and fineness. In India, the Bureau of Indian Standards (BIS) is responsible for hallmarking gold under the BIS Hallmarking Scheme. This certification ensures that the gold meets the prescribed purity standards, protecting consumers from fraud.The hallmarking process involves several steps to certify the gold's purity:
Step 1
Jewellers submit their gold articles to a BIS-certified Assaying and Hallmarking Centre. A sample is taken for testing.
Step 2
The gold undergoes chemical and X-ray fluorescence (XRF) testing to determine its exact composition. If the gold meets the required standards (e.g., 22K, 18K, or 14K), it proceeds to the next step.
Step 3
Once approved, the jewellery is engraved with the BIS hallmark, which includes:
- Purity in carats (e.g., 22K916 for 22K gold)
- The Assaying & Hallmarking Centre’s mark
- The jeweller’s unique identification mark
- A six-digit alphanumeric Hallmark Unique Identification (HUID) number
Step 4
The jewellery is checked again before being returned to the jeweller for sale.Since June 2021, hallmarking has been mandatory in India for gold jewellery and artefacts, ensuring transparency and trust in gold purchases.
2. KDM
KDM is a type of gold alloy containing cadmium as a soldering material. It was widely used for making intricate gold jewellery. The term KDM comes from the cadmium soldering process, where a mix of 92% gold and 8% cadmium was used to join gold pieces together.KDM gold is no longer preferred due to health hazards. Cadmium is toxic and can cause respiratory and skin-related issues in artisans handling it. As a result, the BIS banned cadmium soldering, replacing it with hallmarked gold jewellery.
3. 916 Gold
916 gold signifies 22-karat gold, comprising 91.6% pure gold and 8.4% alloyed metals, such as silver, copper, or zinc, to enhance its strength and durability. The term "916" originates from the gold's purity in parts per thousand (i.e., 916/1000). It is widely used in jewellery due to its purity and strength balance.To check whether the ornament is 916 Gold, you can use the following tips:
- BIS certifies gold with a hallmark that includes:
- Use a magnifying glass to check. A genuine BIS hallmark is clear and precisely engraved. Fake marks may appear blurry or uneven.
- You can ask the jeweller to use nitric acid to check gold's purity. If the gold reacts, it may contain impurities.
Hallmarked vs KDM vs 916 Gold Here are the key distinctions between various types of gold:
| Aspect | Hallmarked Gold | KDM Gold | 916 Gold |
| Definition | Gold certified by the Bureau of Indian Standards (BIS) for purity and authenticity. | Gold is soldered using cadmium, a material that simplifies intricate designs. | Refers to 22-karat gold, containing 91.6% pure gold and 8.4% alloy. |
| Purity | It is available in various purities, such as 958 (23K), 916 (22K), 875 (21K), and 750 (18K). | Purity depends on the gold used but may have slight impurities due to cadmium soldering. | Specifically denotes 22-karat gold, ensuring 91.6% purity. |
| Certification | Stamped with the BIS hallmark, including purity, jeweller's mark, and hallmarking centre. | No certification; it relies on the reputation of the jeweller. | No separate certification, but it often overlaps with Hallmarked Gold if certified. |
| Health Concerns | Free from harmful substances; safe for use. | Contains cadmium, which is toxic and poses health risks during manufacturing. | Safe for use, as it does not involve cadmium soldering. |
| Durability | Depends on the karat; higher karats are softer. | Durable but may have slight impurities due to soldering. | Durable and ideal for intricate jewellery designs. |
| Value | Higher resale value due to certification and guaranteed purity. | Lower resale value due to lack of certification and potential impurities. | High resale value, especially when certified as Hallmarked Gold. |
| Usage | Preferred for investment and high-value jewellery. | Used for intricate designs but is less preferred due to health and purity concerns. | Commonly used for jewellery due to its balance of purity and durability. |
Which is Ideal for a Gold Loan: Hallmarked Gold, KDM, or 916 Gold?
Lenders prefer hallmarked gold or 916 gold (22-karat) when applying for a gold loan since these have verified purity. Here are some tips to get hassle-free gold loan approval:
Higher LTV
RBI allows lenders to provide loans up to 75% of the gold’s value. Choose lenders offering the highest LTV to maximise your loan amount.
Interest & Fees
Gold loan interest rates vary from 7% to 20% annually, depending on the lender. Also, check for hidden processing fees, valuation charges, and foreclosure penalties.
Loan Tenure
Gold loans typically have tenures of 3 to 36 months. A shorter tenure reduces total interest costs, helping you repay faster without excessive financial burden.
Repayment Options
Some lenders allow monthly EMIs, while others offer bullet repayments (pay monthly interest and principal payments at the end). Choose a repayment method that fits your financial capacity.
Non-Repayment Risk
If you cannot repay on time, lenders can auction your gold. Understand the lender’s policy on non-repayment and grace periods to avoid losing your jewellery.
Borrow Wisely
Borrow only what you need and can repay easily. Taking a high loan amount increases the risk of default, leading to the potential loss of your pledged gold.
Gold Security
Confirm whether the lender stores gold in a secure vault with insurance coverage. Reputable banks and NBFCs ensure safety from theft or damage, giving you peace of mind.
Making the Right Choice: Hallmarked, KDM, or 916 Gold
When buying gold, understanding these terms is essential for making a wise investment. Hallmarked gold ensures authenticity and purity, offering the safest and most reliable choice. 916 gold (22K) balances durability and purity, making it ideal for jewellery. KDM gold, once popular for intricate designs, has been phased out due to health risks.If you purchase gold for long-term value or a loan, opt for BIS-hallmarked physical gold for guaranteed purity. You can also find the same quality and purity in digital gold , which offers a convenient and secure way to invest without the hassle of storage or purity concerns.
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The information contained herein is generic in nature and is meant for educational purposes only. Nothing here is to be construed as an investment or financial or taxation advice nor to be considered as an invitation or solicitation or advertisement for any financial product. Readers are advised to exercise discretion and should seek independent professional advice prior to making any investment decision in relation to any financial product. Aditya Birla Capital Group is not liable for any decision arising out of the use of this information.

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