It's likely that you have heard of KDM gold if you have ever gone jewelry shopping with your parents or grandparents. It was one of the most often used kinds of gold in Indian jewelry for many years. However, the majority of jewelers no longer employ it, leaving many consumers perplexed.
In this blog, we will explain the KDM full form, what KDM gold actually means, why it was phased out, and what health risks it carried. We will also compare it with BIS hallmark gold and 916 gold and walk you through how to check gold purity and cover practical questions like resale value and gold loan eligibility, so you know exactly what to look for the next time you buy, sell, or borrow against gold jewelry.
What is KDM gold? Meaning and full form
Let's begin with the basics. KDM, the full form of "gold," stands for "Kadmium," which is the German name for cadmium. So, when people ask what is KDM gold, the easy response is that it is gold jewelry manufactured with a cadmium-based soldering procedure.
Here's how KDM gold jewelry was historically made:
Jewelers required a method to solder gold pieces together for rings, chains, bangles, and other ornaments.
To reduce the melting point of the solder, a small amount of cadmium was combined with gold.
The gold soldering procedure became faster, cheaper, and easier since the joints melted at a lower temperature and blended seamlessly with the jewelry.
The jewelry had a smooth, seamless finish with minimal visible joint marks, making it popular among jewelers and clients.
This process became the industry norm for a long time, which is why so many older gold ornaments in Indian homes are manufactured with KDM gold manufacturing methods.
What was KDM gold banned in India?
So let's come to the main question: why was KDM gold banned? And the answer is those cardium exposure that totally involved in the health hazard during the jewelry-making process
Here are the key reasons behind the move away from KDM gold soldering:
Cadmium soldering in gold releases toxic fumes when heated, and jewelery workers were exposed to these fumes daily, often without proper safety equipment
Long-term exposure to cadmium fumes causes serious respiratory and kidney problems among goldsmiths and artisans
Industry bodies and the government encouraged jewelers to transition to safer alternatives as awareness of these hazards increased.
The Bureau of Indian Standards (BIS) implemented hallmarking standards that discouraged the use of cadmium-based solder and encouraged the use of safer methods.
It is important to note that there was never a singular, explicit law that prohibited the use of KDM gold banned under that specific term. Rather, the transition occurred gradually, influenced by the emergence of BIS hallmarking as the new standard, industry self-regulation, and health and safety concerns. Today, the majority of reputable jewelers no longer produce new KDM gold ornaments, and cadmium solder has been largely supplanted.
This gradual transition is also the reason why there is so much confusion regarding the precise status of the KDM gold-banned rules. The government's implementation of mandatory hallmarking regulations over the past few years rendered it commercially unfeasible for jewelers to continue selling unhallmarked, cadmium-soldered jewelry. Consequently, the entire industry was compelled to adopt safer practices. There was no overnight suspension with a fixed date.
Health risks of cadmium in gold jewelry
So, is KDM gold safe? To answer this question properly, we need two separate things: warning existing KDM jewelry and the process used to make it.
Here are the main KDM gold health risks to understand:
Cadmium health risks are mostly linked to inhaling cadmium fumes during manufacturing, not to wearing the finished jewelry casually
Long-term exposure to cadmium in gold soldering by goldsmiths and factory workers increases the likelihood of developing kidney issues, bone weakness, and lung injury.
Cadmium is classified as a toxic heavy metal, and prolonged exposure, even in small amounts, can accumulate in the body over time.
The risk of recurrent skin contact with jewelry containing toxic cadmium in jewelry traces is significantly lower for everyday wearers than for factory workers. However, it is still advisable to avoid this, particularly for individuals with sensitive skin or allergies.
This is one of the primary reasons why the jewelry industry transitioned to cleaner alternatives and why KDM gold safety became a topic of discussion among regulators and consumer groups.
Is cadmium gold illegal and banned in India today
Many people want to know if KDM gold is illegal or KDM gold is banned in India and expect a simple answer of "yes" or "no." The truth is a bit more complicated.
Here is the picture right now:
One specific law doesn't make it illegal to own or wear KDM gold jewelry that you already have at home.
However, because of BIS rules, most licensed jewelers can't sell new gold jewelry without a legal hallmark. This means that new KDM-soldered pieces will eventually be taken off the market.
Some small sellers who aren't licensed may still use similar methods, but this is against BIS hallmarking rules and is becoming less common.
It's not technically "illegal" to use KDM gold, but it's not the norm anymore, and it's hard to find brand-new, unmarked KDM jewelry in shops you can trust.
KDM hold vs. Hallmark gold vs. 916 gold: what is the difference
For good reason, this comparison is among the most popular. Let's examine KDM gold versus Hallmark gold and KDM gold versus 916 gold in detail.
The difference between hallmark gold and KDM
KDM gold is characterized by its production method, which involves soldering gold with an alloy based on cadmium.
Regardless of the soldering technique employed, Hallmark gold is defined as gold that has undergone purity testing and certification by BIS.
To put it another way, hallmarking refers to a confirmed purity check, whereas KDM describes how the jewelry was linked. Technically, a piece of jewelry can be hallmarked using a different, safer soldering method.
The difference between 916 and KDM gold
"916 gold" describes 22-karat gold that is 91.6% pure; this is a purity level rather than a production process.
Is KDM Gold 916? It might be because 22K (91.6% pure) gold was frequently used to make KDM jewelry, although the KDM name itself makes no mention of verified purity.
Since KDM is an older soldering technique and 916 is a purity standard, it is actually incorrect to inquire about 916 gold KDM. Although they may overlap, the two are distinct concepts.
The truthful response to the question of which gold is better than KDM gold is BIS-hallmarked gold since it ensures a government-verified purity level and a safer manufacturing procedure, two things that ordinary KDM gold has never formally guaranteed.
Understanding BIS hallmark gold
Today, BIS marked gold is what you should look for when you buy gold jewelry. Let's find out what it really means.
The way the Bureau of Indian Standards marks gold is as follows:
BIS is the national organization in India that makes sure that gold jewelry sold there is pure and fine.
Gold that is BIS certified has to be tested at centers recognized by the BIS before it can be marked with the mark.
The BIS hallmark symbol usually has the BIS logo, the purity grade (for example, 916 for 22K), the mark of the assaying center, and a unique HUID number.
The official BIS CARE app can check this HUID number to make sure that a certain piece of jewelry is really approved.
How to identify BIS hallmark gold when you are at a store:
Keep an eye out for the BIS triangle mark, which is usually stamped on the inside of a ring or clasp.
Look for a number next to it that says "purity," like 916 for 22K gold.
Ask the jeweler for the HUID number and use the BIS CARE website or mobile app to make sure it's correct.
Always ask for a proper bill that lists the jewelry's date of birth, purity, and weight.
Gold purity guide: 916, 750, and more
Before you buy or sell any jewelry, whether it's hallmarked gold or old KDM gold, you need to know how pure the gold is.
This is a simple list of the most common gold karat purity levels:
22K gold, which is also written as 22K 916 gold, is 91.6% pure gold that has small amounts of other metals added to make it stronger. This is the quality that is most often used for jewelry in India.
18K gold, which is often marked "750 gold," is 75% pure gold. It lasts longer and costs a little less, and a lot of people like to use it to make jewelry with diamonds and other gems set in it.
14K gold that says "585" on it is 58.5% pure gold. Because it is stronger and cheaper, it is often used in Western-style jewelry designs.
24 karat gold is almost completely pure, but it is too soft to wear as jewelry, so it is mostly used to make coins and bars.
How to make sure gold is pure before buying it:
Look for the pure stamp and the BIS mark on the piece.
Ask the jeweler to show you the testing report or proof that says the gold is pure.
Use a simple magnifying glass to find the number that says "purity" written on the jewelry.
If you're buying something expensive, you can ask a qualified assaying center to do an independent purity test.
Does KDM gold have resale value?
A very practical question that many families have is whether KDM gold can be sold again, especially if they have older jewelry that they received.
This is what usually happens with the KDM gold resale value:
Jewelers can still buy back old KDM gold jewelry, but the gold has to be melted down and tested again to make sure it is still pure.
KDM jewelry doesn't have a BIS mark on it, so the buyer's trust in the seller and an on-the-spot purity check most of the time determine how much KDM gold it's worth.
If your KDM gold jewelry doesn't have a certified purity mark, it may sell for a little less than hallmarked jewelry of the same weight. This is because the buyer has to check the purity themselves.
It's usually safer and more fair to trade in old KDM jewelry at a reputable jeweler, preferably the one who sold you the piece in the first place.
Okay, so I can sell KDM gold. A lot of the time, yes. Getting it checked at a reputable location is important so you know how much gold it is really worth before you agree to any deal.
Can you get a gold loan on KDM Gold?
In India, one of the most popular things used to get a gold loan is jewelry made of gold, even older KDM pieces. This is something that Bikesh Finserv works with a lot, so here's what you should know.
Important facts about getting a KDM gold loan and how much it's worth:
Can I borrow gold against KDM gold? Yes, most lenders will accept it. However, because it doesn't have an official mark, they will test its purity on their own before deciding how much it's worth.
The gold loan value is based on how pure the gold was tested to be and how much it is worth on the market right now, not on what the jewelry is labeled as.
The purity of the gold is very important for a gold loan. Usually, a higher purity means a bigger loan amount for the same weight of jewelry.
Applications for hallmarked gold loans are usually processed a little faster because the purity has already been checked. However, KDM jewelry that isn't hallmarked is still widely accepted after a purity check in the branch.
You can usually get a gold loan for rings, chains, bands, and coins; it doesn't matter if they are hallmarked or older KDM pieces.
FAQs
What is the full form of KDM in Gold?
The full form of KDM is "Kadmium," which is the German word for cadmium. This term is a reference to the cadmium-based solder that was previously employed to join gold jewelry pieces.
Why is KDM gold banned in India?
There is no one law that says it is illegal in every way. Instead, cadmium soldering in gold was linked to serious health risks for jewelry workers, and it was slowly taken off the market by BIS hallmarking requirements.
Is KDM gold safe to wear?
Most people don't think there is much of a risk in wearing current KDM jewelry because the main health risks from cadmium are from breathing in fumes while it is being made, not from touching your skin.
Is KDM gold the same as 916 gold?
Not really. There is 91.6% pure gold in 916 gold, which is 22 karats pure. KDM is a way for soldering. Most of the time, but not always, 916-purity gold was used to make KDM jewelry.