Diamond jewellery in India is priced differently from a loose stone, because the ring is four purchases on one bill: the diamond, the metal it is set in, the work of making it, and the tax on the total. Each line has its own market, its own unit, and its own way of being quoted, and the total is only understandable when the lines are separated. This guide explains each line in rupees, shows how a 1-carat ring bill is built, explains hallmarking and certification in the Indian market, and gives the questions that separate a transparent bill from a single total. No live prices are quoted: every worked number is an assumed input, labelled as such, used to show the arithmetic, and the prices that govern are the ones on the jeweller bill in your hand.

The four lines of an Indian diamond ring bill

Every diamond ring bill in India, from a high-street jeweller to a large chain, is built from the same four lines, and the discipline of buying is to see all four. The diamond line is the value of the stone or stones, priced by carat weight, grades, and origin. The metal line is the value of the gold or platinum in the ring, priced by weight and purity at the day rate. The making charges line is the cost of the craftsmanship, quoted as a percentage of the metal value, as a rate per gram, or as a fixed amount, depending on the jeweller and the design. The tax line is GST, charged on the total value as shown on the invoice, at the rate that applies to the supply. Add the four lines and the total is the price. Any bill that shows only the total, without the four lines, cannot be compared with another bill, and should not be accepted as a basis for a decision.

The separation matters because the four lines move independently. The diamond price moves with the international diamond market, the grades, and the origin. The metal price moves with the gold rate, which is set nationally and quoted per gram, and changes daily. Making charges move with the complexity of the design and the jeweller policy, and they are the most negotiable line. Tax moves only when the law changes, and it is the least negotiable line. A ring that costs more this month than last month may have the same diamond and the same making charges, with the difference entirely in the gold rate, and only a separated bill shows that. The habit to build is to read the bill line by line, in rupees, with the weight and the rate on each line, before reading the total.

Currency is part of the discipline. Diamond prices in India are quoted in rupees, metal is quoted in rupees per gram, and making charges are quoted in rupees or as a percentage that resolves to rupees. International diamond price lists are quoted in dollars, and a jeweller who quotes a diamond price in dollars must convert it at a stated rate to rupees for the bill, and the rate should be stated. Do not compare a dollar quote with a rupee quote without converting at the same rate, on the same day, and do not accept a conversion rate that is not stated. The bill is in rupees, the payment is in rupees, and the comparison must be in rupees.

The diamond line: carat, grades, and rupees per carat

The diamond line follows the same method as the loose-stone method in the companion guide: carat weight times price per carat, adjusted by multipliers for cut, colour, and clarity, with the price per carat in rupees and taken from a quote for a comparable stone. A 1-carat stone is the natural unit for comparison, because 1 carat is a round weight with a distinct price bracket, and because most ring centre stones cluster around it. The price per carat in rupees for a 1-carat stone of stated grades is the figure to obtain from at least two jewellers, for the same grades, the same shape, the same laboratory, and the same origin, natural or lab-grown. The comparison must be within a category: natural with natural, lab-grown with lab-grown, because the two markets price the same grades differently.

Small stones, the melee that pavé a band or halo a centre stone, are priced differently from the centre stone. Melee is commonly priced by the parcel or by the total weight, at a lower price per carat than a single large stone, because small stones are plentiful and their grading is less individual. A ring bill should state the centre stone separately from the melee, with the centre stone weight, grades, and certificate stated, and the melee weight stated as a total. A bill that gives one diamond line for the whole ring, without separating the centre stone, hides the most valuable part of the purchase inside an average, and the average cannot be checked. Ask for the separation, and check the centre stone against its certificate, number by number.

The worked example below uses assumed inputs, labelled as such, to show the arithmetic: a price per carat of ₹1,00,000, chosen as a round number for calculation, not as a market price. At that assumed rate, a 1-carat stone at neutral multipliers costs ₹1,00,000, and a 0.50-carat stone costs ₹50,000 at the same assumed rate, though in a real market the 0.50-carat price per carat would differ, because price per carat rises with weight. The assumed rate is a placeholder that lets the bill arithmetic be followed; the real rate is the one on the jeweller quote, for the stone being bought, on the day. Never carry an assumed rate into a purchase decision.

The metal line: 18-karat gold, weight, and hallmark

Diamond rings in India are most commonly set in 18-karat gold, marked 750, which is 75 percent pure gold alloyed with other metals for strength. Pure 24-karat gold, marked 999, is too soft to hold a stone securely in everyday wear, and 22-karat gold, marked 916, the standard for plain gold jewellery in India, is used for diamond settings less often, because the harder 18-karat alloy grips the stone better. Platinum settings exist and are priced by weight at the platinum rate, with a higher making charge, because platinum is harder to work. The metal line on the bill is the weight of the metal in grams, times the purity fraction, times the day rate per gram for pure gold, and the weight should be stated on the bill and verifiable on a scale.

Hallmarking is the guarantee of purity, and it is mandatory in India for gold jewellery in the karatages it covers, including 18-karat. A BIS hallmark carries three marks: the BIS triangle logo, the purity grade such as 750 for 18-karat, and a six-character Hallmark Unique Identification number, the HUID, which can be verified on the BIS Care application. The HUID is unique to the piece, and verifying it confirms that the piece was assayed and that the stated purity was found. A ring without a hallmark, or with a hallmark that does not verify, should not be bought as 18-karat gold, whatever the bill says. The hallmark is on the metal, not on the diamond, and it says nothing about the stone, which has its own certificate.

The day rate for gold is the rate the jeweller charges on the day, based on the national bullion rate, and it varies by city and by jeweller by a small margin. Ask for the rate per gram used on the bill, and compare it with the published rate for the day, allowing for the jeweller margin. The metal value is the most transparent line on the bill, because the weight, the purity, and the rate are all checkable, and a metal line that does not state all three is incomplete. Weighing the finished ring includes the stones, so the metal weight is the weight before setting, as recorded by the jeweller, and the bill should state it as the net metal weight, not the gross weight including stones.

Making charges and wastage: how they are quoted

Making charges are the cost of turning metal and stones into a ring, and they are quoted in three ways: as a percentage of the metal value, as a rate per gram of metal, or as a fixed amount for the design. Percentage quoting is common for plain and standard designs, with rates commonly seen in the range of about 8 to 25 percent of the metal value, lower for plain bands and higher for intricate or bridal work, though the range varies by jeweller and city. Per-gram quoting is common where the work is heavy, and fixed-amount quoting is common for named designs. Whichever way it is quoted, ask for the rupee figure, because a percentage of an unstated metal value cannot be checked, and a per-gram rate without the weight cannot be checked either. The rupee figure is the line that enters the total.

Wastage is a separate concept that is sometimes charged alongside making charges, and it must be understood before it is accepted. Wastage is the gold lost during manufacture — filings, melting loss, and polishing loss — and some jewellers charge it as a percentage of the metal weight, added to the billable weight. Other jewellers include wastage in the making charges and charge no separate wastage. The two practices are not equivalent, and a bill that charges both a high making percentage and a high wastage percentage may be charging twice for the same loss. Ask whether wastage is charged, at what percentage, and whether it is included in the making charges, and compare bills on the total of making plus wastage, in rupees, not on either line alone.

Making charges are the most negotiable line on the bill, and negotiation is expected in much of the Indian market, particularly for higher-value pieces and for plain designs. The negotiation should be about the rupee figure, not about the percentage, because the percentage moves with the metal rate and the rupee figure is what is paid. A reduction in making charges that is offset by a higher metal rate or a lower diamond weight is not a reduction. Settle the diamond line, the metal line, and the tax line first, in writing, and negotiate the making line last, on the rupee figure, with the total re-added in front of you. The bill that results should show every line as agreed, with no line changed after the negotiation.

Tax on the bill: what GST applies to

GST on jewellery in India is charged on the total value of the supply as shown on the invoice. For retail jewellery, GST at 3 percent is charged on the total value, which is the value of the metal plus the value of the stones plus making charges and any wastage charged, as a composite supply. The rate and the base should be stated on the invoice, and the GST amount should be shown as its own line, so the pre-tax total and the tax can each be checked. Some presentations show GST separately on the metal and on the making charges, reflecting the different treatment of goods and job work in the tax law, and the invoice should make the treatment clear, whatever presentation is used. The buyer check is simple: the invoice total must equal the pre-tax lines plus the GST line, and the GST rate applied must be the rate in force on the date of the invoice.

Two cautions belong with the tax line. First, GST is charged on the value the jeweller states, so an understated diamond or metal value that lowers the GST also understates the insured and resale value of the piece, and it creates a record that does not match the piece. Insist on full and correct values on the invoice, even where a lower stated value is suggested, because the invoice is the document of title and of value for insurance, resale, and any future dispute. Second, tax law changes, and the rate and the treatment of making charges should be confirmed as in force on the date of purchase, from the invoice itself, not from memory or from a guide. This guide states the structure of the tax, not a promise about the rate on any future date.

Worked example: a 1-carat ring bill, line by line

Build a 1-carat ring bill from assumed inputs, each labelled as assumed, to show the arithmetic. Assume a 1-carat centre stone at an assumed price per carat of ₹1,00,000, at neutral multipliers, giving a diamond line of ₹1,00,000. Assume 3 grams of 18-karat gold, at an assumed gold rate of ₹10,000 per gram for 24-karat gold, so the metal value is 3 times 0.75 times ₹10,000, which is ₹22,500. Assume making charges of 15 percent of the metal value, which is ₹3,375, with no separate wastage charged. The pre-tax total is ₹1,00,000 plus ₹22,500 plus ₹3,375, which is ₹1,25,875. GST at 3 percent on that total is ₹3,776, and the invoice total is ₹1,29,651. Every input in that calculation is assumed, and the total is an illustration of the method, not a price for any ring.

All inputs assumed for arithmetic only. Replace every input with the jeweller quoted figure before deciding.

Change one input and the bill moves transparently, which is the point of the separation. Raise the making charges to 25 percent and the making line becomes ₹5,625, the pre-tax total becomes ₹1,28,125, and the invoice total becomes ₹1,31,969. Use a lab-grown centre stone at an assumed price per carat of ₹25,000, one quarter of the assumed natural rate, and the diamond line falls to ₹25,000, the pre-tax total to ₹50,875, and the invoice total to ₹52,401. The metal and making lines do not change, because the setting is the same, and the tax falls with the total. That transparency is what a separated bill buys: each decision — natural or lab-grown, plain or intricate, 18-karat or platinum — shows up on its own line, and the buyer can see what each choice costs, in rupees, before paying.

The en-IN grouping used in the table, with commas after the first three digits from the right and then every two digits, is the Indian grouping convention, and the rupee symbol ₹ is used throughout this guide, because the guide is about India and the bill is in rupees. The calculator page for diamonds works in dollars, and its example default is in dollars; this guide works in rupees, and its assumed inputs are in rupees, and the two must not be mixed. Do not convert the calculator dollar example into rupees at any exchange rate and treat the result as an Indian price, because the markets, the grades, and the bill structure differ, and the conversion would produce a number that belongs to neither market.

Natural and lab-grown diamonds in the Indian market

India is both a major diamond cutting centre, centred on Surat, and a growing market for lab-grown diamonds, which are manufactured in India at scale. The two markets coexist, and the same jeweller may sell both, in separate ranges, with separate pricing. Natural stones are priced in the international market, in dollars per carat by grade, and converted to rupees for the bill. Lab-grown stones are priced in the domestic manufacturing market, in rupees per carat, and their prices have fallen as production has scaled, faster than natural prices have moved. The price gap between the two, for the same grades, is large, and it is the largest single price fact a buyer in India faces, larger than any making-charge negotiation or any gold-rate movement.

Disclosure in India follows the same principle as elsewhere: a lab-grown stone must be sold as lab-grown, its certificate must state its origin and growth method, and the bill must state it. The common certification in the Indian market for both categories is from the Gemological Institute of America and the International Gemological Institute, and the certificate should be read for the origin line first, the grades second, and the measurements third. A stone sold as natural without a certificate, at a price that looks like a lab-grown price, should be treated as uncertified and priced as such, whatever the seller says. The certificate is the document, and the document governs.

Buyback and exchange policies differ between natural and lab-grown stones, and they differ between jewellers, and they must be read before purchase, not after. Many jewellers offer exchange at a stated percentage of the purchase value for natural stones, and a lower percentage, or no buyback, for lab-grown stones, reflecting the faster-falling replacement cost. A policy that promises full buyback on a lab-grown stone should be read for its conditions, its time limit, and whether it is exchange-only or cash. The policy is part of the price, because a stone that cannot be exchanged has a lower effective value than a stone that can, and the difference belongs in the decision, in rupees, alongside the bill.

Buying in India: certificate, bill, and buyback

Buy in India the way you would buy anywhere, with the local documents added. Get the diamond certificate, verify the certificate number with the laboratory, and check that the stone matches the certificate: weight, shape, grades, and origin. Get the BIS hallmark verified on the BIS Care application, using the HUID. Get the itemised bill, with the four lines, the weights, the rates, and the GST, and check that the lines add to the total. Get the buyback and exchange policy in writing, with the percentages, the conditions, and the time limit. Get the making-charge and wastage treatment stated, so the bill can be compared with another jeweller bill on the same terms. Each document takes minutes to obtain and check, and together they are the difference between a purchase and a gamble.

Compare at least two jewellers, on the same specification, in the same week, because the gold rate moves daily and the diamond quote moves with it. The specification to fix is the centre stone weight and grades, the origin, the shape, the laboratory, the metal karatage and weight, and the design, and the quotes must be for that specification, not for the nearest stone in stock. A jeweller who cannot quote the specification, or who substitutes a different grade without saying so, is not comparable, and the comparison should exclude them, however attractive the total looks. The ring that is bought is the ring that was specified, priced line by line, in rupees, with the documents to prove it, and no other ring, however similar, is the same purchase.

This guide quotes no live prices, because live prices in India move daily with the gold rate and the diamond market, and a price quoted here would be wrong before it was read. Every worked number is an assumed input, labelled as such, used to show how a bill is built. The prices that govern are the ones on the jeweller bill, in rupees, on the day, for the stone and the metal in the ring being bought. Take the method to the jeweller, get the itemised bill, check the documents, and the decision will be made on numbers that are real, current, and yours.

Frequently asked questions

How is a diamond ring priced in India?

As four lines on one bill, all in rupees: the diamond value, the metal value, the making charges, and GST. The diamond is priced by carat weight, grades, and origin. The metal, usually 18-karat gold, is priced by weight and purity at the day rate. Making charges are quoted as a percentage, per gram, or fixed amount, and GST is charged on the total value. Ask for each line separately, with weights and rates stated, and the total will explain itself.

How much does a 1-carat diamond ring cost in India?

It depends on the diamond grades and origin, the metal weight and rate, the making charges, and the tax, and no single figure is meaningful without those details. The worked example in this guide uses assumed inputs, including ₹1,00,000 per carat for the stone, and reaches an invoice total of ₹1,29,651 for a 1-carat ring in 3 grams of 18-karat gold, but every input is assumed for arithmetic only. Obtain itemised quotes from jewellers for the exact specification, in rupees, on the day.

What is the BIS hallmark on gold jewellery in India?

The BIS hallmark is a government-certified purity guarantee. It carries the BIS triangle logo, the purity grade such as 750 for 18-karat gold, and a six-character Hallmark Unique Identification number, the HUID, which can be verified on the BIS Care application. Hallmarking is mandatory for the karatages it covers. A ring without a verifiable hallmark should not be bought as 18-karat gold, whatever the bill says.

Are lab-grown diamonds cheaper than natural diamonds in India?

Yes, materially cheaper for the same weight and grades, because lab-grown diamonds are manufactured in India at scale and their supply is not limited by the rarity of large rough. The price gap is the largest single price fact in the Indian diamond market. Compare lab-grown with lab-grown and natural with natural, check that the certificate states the origin, and read the buyback and exchange policy, which is commonly less generous for lab-grown stones.

What are making charges for diamond jewellery in India?

Making charges are the cost of craftsmanship, commonly quoted as a percentage of the metal value, often in the range of about 8 to 25 percent depending on design complexity, or as a rate per gram, or as a fixed amount. Wastage, the gold lost in manufacture, is sometimes charged separately and sometimes included in making charges, so compare bills on the total of making plus wastage in rupees. Making charges are the most negotiable line; negotiate the rupee figure, not the percentage.

What GST applies to diamond jewellery in India?

GST at 3 percent is charged on the total value of the retail jewellery supply, which is the value of the metal plus the stones plus making charges and any wastage, as a composite supply, and it should be shown as its own line on the invoice. Tax law changes, so confirm the rate and treatment in force on the date of purchase from the invoice itself. Insist on full and correct values on the invoice, because the invoice is the document of value for insurance and resale.