How Is Gold Value Calculated When You Sell It?
Most people walk into a gold buyback counter assuming it’s straightforward math. Here’s why it almost never is — and what you actually need to know before you sell.
Alok Parmar
June 09, 2026
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Every day, people across India check gold rates online, walk into a shop, and expect to leave with close to that number. Most don't. Not because the shop is wrong — but because how gold value is calculated isn't what most people think it is.
The standard assumption is simple
Total weight × gold rate = Final value
That formula is incomplete, and the gap between it and the actual calculation can cost you thousands of rupees.
The real calculation has three legs: gold purity, actual gold weight, and the live market rate. Miss any one of them, and you’ll never fully understand what you’re receiving for your jewellery.
1
Purity is everything
Gold purity is usually marked through BIS hallmarks such as 22K/916 (91.6% gold), 18K/750 (75% gold), and 14K/585 (58.5% gold). These numbers indicate how much pure gold is actually present in the jewellery — a key factor that directly impacts its resale value and valuation.Two chains that weigh exactly the same and look nearly identical can carry very different values if one is 22K and the other is 18K. The 22K chain has roughly 22% more actual gold in it.This is why purity testing — done through an acid test at reputable buyback centres like AsliValue — is the non-negotiable first step in any honest evaluation.
Check your jewellery for BIS hallmarking
Since 2021, BIS hallmarking has been mandatory for gold jewellery sold in India. If your ornament has a BIS hallmark (look for a small stamp with “BIS” and the karat marking), that’s a reliable indicator of purity. Older jewellery may not have this stamp — in which case, ask for a proper purity test before accepting any valuation.
To gain a deeper understanding of gold purity and how it affects the value of your jewellery, read our detailed guide on gold purity.
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2
Live gold rate on that day
Gold prices in India follow the international spot price of gold, adjusted for import duties, currency exchange rates, and local market conditions. Rates fluctuate throughout the trading day and are updated continuously.
The figure you see on a financial news website reflects the buying rate — what the market charges you to buy gold. When you’re selling, there is a natural spread between this buying rate and what a buyer will offer you. This is standard in every commodity market worldwide and is not a deduction or fee — it is simply the structure of how buy-sell pricing works.
3
Your ornament weighs more than its gold
This is the part that surprises most sellers, especially those selling heavier bridal jewellery or stone-set necklaces.A finished ornament is not made of gold alone. It typically contains:
● Gemstones, pearls, or diamonds set into the design
● Metal clasps, locks, and hooks (sometimes made of a different alloy)
● Lac (lacquer) or wax used as a filler in hollow or kundan designs
● Colour coating or plating on fashion pieces
All of these add to the total weight of the ornament. None of them count as gold. A reputable evaluator will carefully separate the non-gold components before computing the net gold weight.
Example
If the necklace has emerald beads weighing 3 grams, lac filling of 2 grams, and metal clasps of 0.5 grams, the net gold weight is closer to 19.5 grams. That’s a difference of 5.5 grams — at ₹7,000 per gram of 22K gold, that’s approximately ₹38,500 in value difference. Understanding this number protects you.
The formula that shows you exactly what your gold is worth
Once purity is confirmed and actual gold weight is isolated, the calculation is clean:
The correct formula
Net Gold Weight (in grams) × Purity × Gold Rate = Final Value
Example: A 22K necklace with net gold weight of 18 grams, on a day when 22K gold is valued at ₹6,800 per gram:18g × 0.916 × ₹6,800 = ₹1,12,118
Three questions every seller should ask
1. What is the purity your machine is showing for my jewellery?
2. What is the net gold weight after removing stones, lac, and other non-gold components?
3. What is today’s buyback rate per gram for this karat?
A transparent operator will answer all three without hesitation. The final amount you receive should follow directly from these numbers — no surprise deductions at the end.
What transparent gold valuation looks like
Gold is one of India’s most deeply held financial assets. Families in every corner of the country — from tier 1 metros to rural tehsils — have accumulated gold over generations as savings, as security, and as sentiment.When that gold needs to be converted back to cash, the transaction deserves the same transparency that any financial product demands. Understanding purity, actual gold weight, and the live market rate isn’t just useful knowledge — it’s what fair dealing looks like.
The final amount you walk away with should be something you can verify yourself, line by line, without needing to simply trust that the number is right.
Find out what your gold is actually worth
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Frequently Asked Questions
How do I know the evaluator is separating the non-gold weight correctly?
That concern is fair — and the honest answer is that you should be watching it happen. A legitimate evaluator separates stones, lac, and clasps in front of you and explains each deduction before running any numbers. At AsliValue, the entire evaluation is done at your home, with every step explained as it happens. If a buyer is doing this behind a counter out of your sight, ask them to show you.
What if my jewellery doesn't have a BIS hallmark — will I get less for it?
Not necessarily less — but it does mean purity can't be assumed from the stamp alone. Older jewellery, inherited pieces, and gold bought before 2021 often has no hallmark. In that case, a purity test — touchstone and acid — is the only way to confirm the actual karat. The result of that test is what drives the valuation, same as any hallmarked piece. The difference is just that testing becomes mandatory rather than optional.
Is the buyback rate the same across all gold buyers in India?
No, and the difference matters more than most sellers expect. Every buyer sets their own buyback rate, which sits slightly below the live market rate — that spread is how buyers operate. The gap between one buyer and another can easily be ₹200–400 per gram. On 20 grams of 22K gold, that's ₹4,000–8,000 walking out the door. The only way to compare fairly is to ask each buyer what their buyback rate is for your specific karat on that day, before any evaluation begins.