How old gold exchange value is calculated in India depends on more than the jewellery’s gross weight or the gold price shown on a screen. A typical exchange quote is built in layers: the jewellery’s purity is assessed, the eligible gold weight is established, an applicable gold-rate basis is used, and then the jeweller’s exchange terms determine any deduction, adjustment or promotional benefit before the final exchange credit is shown.
The most important consumer distinction is this: BIS provides the hallmarking and recognised purity-testing framework, but BIS does not prescribe one universal old-gold exchange deduction, bonus or commercial exchange rate for every jeweller.
The old-gold exchange calculation chain
1. Purity: establish the actual fineness or karat of the gold being exchanged.
2. Eligible gold weight: identify how much of the article is actually gold after stones and other non-gold components are handled.
3. Rate basis: identify the gold rate being applied and whether that rate is already specific to the tested karat.
4. Commercial adjustment: apply the jeweller’s disclosed deduction, processing rule or promotional exchange benefit.
5. Final exchange credit: determine the amount that can actually be used under that exchange programme.
Can old hallmarked and unhallmarked jewellery be exchanged?
Yes. Bureau of Indian Standards guidance says consumers may sell old hallmarked as well as unhallmarked jewellery to jewellers. An old item therefore does not become ineligible merely because it predates current hallmarking practice or does not carry a current hallmark.
That does not mean every jeweller must use the same commercial valuation method. The jeweller can still have its own acceptance conditions, purity thresholds, testing procedure, stone treatment, exchange restrictions and offer terms.
Step 1: establish the jewellery’s actual purity
Purity determines how much fine gold is present in the article. A piece described as 22K, 18K or another fineness should not automatically be valued from the description alone if the exchange programme requires verification.
Current jeweller exchange processes commonly include karatmeter or XRF-style purity assessment. Depending on the transaction and testing method, further testing or melting may also be involved.
Consumers who want independent evidence have another option. BIS says common consumers can approach recognised Assaying and Hallmarking Centres for testing on a chargeable basis. BIS’s consumer-testing framework allows an assay report to be issued for tested jewellery.
This independent purity evidence can help resolve a dispute about fineness, but it does not force a jeweller to offer a particular commercial exchange bonus or deduction.
Step 2: separate gross weight from eligible gold weight
Gross jewellery weight and exchangeable gold weight are not automatically the same number.
Jewellery can contain stones, beads, enamel, lac, thread, springs, solder or other non-gold components. Current exchange policies from major jewellers show that non-gold material can be removed, excluded or handled separately when the gold value is calculated.
For this reason, a customer comparing quotes should ask for the eligible or net gold weight used in the calculation rather than relying only on the total weight shown on the original invoice.
Step 3: identify exactly which gold rate is being applied
The phrase “today’s gold rate” can hide an important calculation issue.
A jeweller may use a rate corresponding directly to the tested karat, or may begin with another reference rate and adjust for fineness. The consumer therefore needs to know whether the displayed rate is already a 22K, 18K or other karat-specific rate before doing their own calculation.
| Rate method | Base-value logic | Main mistake to avoid |
|---|---|---|
| Pure-gold or 24K reference | Eligible metal weight × tested fineness × pure-gold reference rate | Do not omit the purity adjustment |
| Already karat-specific rate | Eligible gold weight × applicable same-karat rate | Do not multiply by the purity percentage again unless the quoted methodology requires it |
This distinction prevents a common DIY-estimation error. If a rate is already the jeweller’s 22K rate, multiplying that amount by 91.6% again can reduce for purity twice.
A simple example of the calculation structure
Suppose a jewellery item is tested and the jeweller establishes an eligible gold weight after non-gold material is handled.
If the jeweller uses a rate that already corresponds to the tested karat, the base metal value can be represented as:
Base gold value = eligible gold weight × applicable same-karat rate
If instead the jeweller starts from a pure-gold reference rate, the structure becomes:
Base gold value = eligible metal weight × tested fineness × pure-gold reference rate
The final exchange credit then depends on the specific programme:
Exchange credit = base gold value − applicable deductions + applicable exchange benefit
This is a framework for reading the quote, not a claim that every jeweller displays its calculation in exactly this format.
Are original making charges recovered in an exchange?
They should not be assumed to be part of the recoverable gold value.
The original purchase price may have included making charges, design charges, taxes, stones and other costs beyond the underlying gold. Current exchange policies show that old jewellery is generally assessed from its recoverable gold content and the programme’s own commercial rules rather than by refunding the original bill amount.
Some brands can offer special exchange guarantees or promotions, so this should not be turned into a universal statement that every customer always loses every original charge. The exact programme terms control.
Is there one standard old-gold deduction in India?
No universal deduction was established in the reviewed evidence.
Current jeweller policies vary. Some programmes disclose deductions or adjustment rules, while others advertise conditional zero-deduction offers or add a promotional exchange benefit.
This variation is exactly why a customer should not treat a percentage shown in an advertisement as a national old-gold exchange rule.
What does “0% deduction” actually mean?
A zero-deduction offer does not automatically mean the customer receives the original invoice value back.
The offer can apply only after the item has been assessed for eligible gold weight and purity. Original making charges, tax, stone costs and the historical gold price can remain separate from the assessed gold value unless the programme explicitly says otherwise.
So the correct question is not only “What is the deduction percentage?” It is also “Deduction from which base value?”
Is there a standard exchange bonus?
No universal bonus was established either.
Some current programmes use time-limited or conditional exchange benefits. These can depend on the type of old jewellery, purity, the new item purchased, minimum transaction conditions or promotional dates.
A current bonus should therefore be treated as a retailer-specific commercial term, not as part of the underlying gold’s intrinsic value.
How are stones and non-gold components treated?
They should be separated from the gold-value calculation unless the exchange programme specifically gives them a separate value.
Current jeweller policies commonly remove or exclude stones and other non-gold components from the weight used for gold valuation. But TPS should not say that every stone is always worthless. A jeweller may have a separate valuation or programme rule for certain components.
The customer should ask whether the quoted weight is the total ornament weight or the actual gold weight used for valuation.
Is exchange value the same as cash buyback value?
No, not necessarily.
An exchange programme can provide credit only against a new jewellery purchase, while a cash buyback programme pays cash under a different set of terms. Tanishq, for example, distinguishes its General Exchange Program from cash resale by treating the assessed amount as purchase credit.
This is why two apparently similar quotes can have different practical value. A ₹1 lakh exchange credit restricted to a new purchase is not automatically the same transaction as a ₹1 lakh unrestricted cash payout.
TPS separately covers the broader selling process in How to Sell Gold in India Without Losing More Than Necessary, while Why Gold Jewellery Resale Value Is Lower Than the Purchase Price explains why the purchase bill and resale value can differ. This page is specifically about reconstructing the old-gold exchange credit.
How to compare two old-gold exchange quotes
Do not compare only the final rupee value or the advertised deduction. Ask both jewellers to expose the same inputs.
Purity
What fineness or karat did the test establish, and what testing method was used?
Eligible gold weight
What weight was actually used after stones and other non-gold material were handled?
Rate basis
Which gold rate was applied, and was it already specific to the tested karat?
Deductions
What amount or percentage was deducted, and from which base?
Exchange benefit
Is there a bonus or zero-deduction promotion, and what conditions control it?
Final usable credit
Is the amount cash, unrestricted value or credit that must be used for a new purchase?
What should you check before agreeing to melting or completing the exchange?
Before an irreversible testing or exchange step, ask for the measured weight, purity result, testing method, gold-rate basis, excluded non-gold weight, every deduction, every promotional benefit and the final exchange credit.
If the purity conclusion is materially disputed, BIS-recognised Assaying and Hallmarking Centres provide an independent testing route for consumers.
The aim is not to force every jeweller to use identical commercial terms. It is to make sure the consumer understands exactly which physical and commercial inputs created the quote.
Bottom line
Old-gold exchange value is best understood as a chain rather than one percentage:
purity → eligible gold weight → applicable rate → deductions or bonus → final exchange credit.
BIS helps consumers verify the gold itself. The jeweller’s exchange programme determines the commercial adjustment. Because neither deductions nor bonuses are universal, the safest comparison is to ask two jewellers for the same underlying inputs and compare the quote line by line.
