One question sits at the centre of every lab grown diamond purchase in India.
How much should I actually pay?
Not what the price tag says. Not what the seller tells you. What should you, as an informed buyer, reasonably expect to pay for a quality, certified lab grown diamond in India in 2026?
The short answer: a good quality, IGI certified 1 carat lab grown diamond in India in 2026 costs roughly ₹17,000 to ₹25,000 for the loose stone, depending on its grades. The equivalent mined diamond costs around ten times that. Finished jewellery adds the gold weight at the day's rate, making charges and 3 percent GST on top.
This guide answers that question with real numbers, clear explanations, and practical advice rooted in current market data. We price and sell IGI certified lab grown diamonds every day in Kolkata and Delhi, so the figures below are the ones we work with.
Why lab grown diamond prices are where they are in 2026
Understanding why lab grown diamonds are priced the way they are helps you shop smarter.
Lab grown diamonds are chemically and physically identical to mined diamonds. The price difference does not reflect quality. It reflects the supply chain.
Mined diamonds require geological surveys, heavy machinery, large scale excavation, complex international logistics, and decades-old distribution networks that add multiple layers of margin before the stone reaches a jeweller's display case.
Lab grown diamonds skip almost all of that. The diamond grows in a controlled facility, is cut and polished, certified by IGI, and reaches the buyer with far fewer hands in between. Supply is also predictable, because growers produce to demand, so there is no artificial scarcity premium built into the price.
India has become one of the world's largest producers of lab grown diamonds, with Surat emerging as a global hub for CVD manufacturing. Domestic production reduces costs further, which is why Indian buyers often get better pricing than buyers in Europe or North America for comparable certified stones.
Lab grown diamond prices also dropped roughly 20 to 30 percent between 2023 and 2025 as global production scaled. Prices have now reached a more stable range in 2026. If you want the fundamentals first, start with what a lab grown diamond actually is.
The 4Cs and how they affect price
The biggest driver of lab grown diamond price is not carat weight alone. It is the combination of all four Cs working together. Cut and colour drive the most visible price difference. Clarity and carat complete the picture.
Cut
An Excellent cut diamond commands a premium of 10 to 20 percent over a Very Good cut of the same carat, colour and clarity. That premium is worth paying. Cut determines brilliance, and a poorly cut diamond looks dull regardless of how good its clarity or colour grade is.
Colour
The price jump between a D colour and a G colour diamond can be 15 to 25 percent for the same carat and clarity. For most buyers, G or H colour is the smart value choice, because the difference is invisible to the naked eye once the stone is set in metal.
Clarity
The gap between VS1 and VVS1 for the same carat and colour can be 10 to 20 percent. Both appear eye-clean. VS1 offers the better value.
Carat
Carat weight has the most dramatic impact on price in the open market. Lab grown prices there do not scale linearly: a 2 carat diamond does not cost twice as much as a 1 carat, it typically costs two and a half to three times more, because larger stones require longer growth cycles and have higher rejection rates during production.
This is the single biggest difference between how the open market prices stones and how we do, which is worth explaining properly.
Shape
Round brilliants usually command a small premium because more rough is lost in cutting. Fancy shapes, oval, pear, emerald, cushion and heart, often give you a larger looking diamond for less, typically 10 to 20 percent below round for the same grade.
What we charge: a flat rate per carat
At Goenka Jewellers, loose lab grown diamonds are priced at a flat rate of roughly ₹25,000 per carat at our recommended grade, rising to about ₹30,000 per carat for D colour, internally flawless. That rate holds from 1 carat all the way through 7 carat.
Read that against the carat section above and the significance becomes clear. In the open market, going from 1 carat to 2 carat multiplies the stone cost by two and a half to three times. On a flat per carat rate, 2 carats costs exactly twice what 1 carat costs. At 3 carats and above, the gap between the two pricing models becomes very large indeed.
We price this way because we are the manufacturer, not a reseller, so there is no layer of margin that needs to expand with stone size. It is also why the carat weights in our under ₹1 lakh collection look unusual for the budget.
Lab grown diamond price chart: India 2026
These are current open-market price ranges for loose, IGI certified, round brilliant cut lab grown diamonds in India. Use them to sense-check any quote you are given.
0.50 carat
Good quality (H colour, VS2 clarity): ₹7,000 to ₹11,000
Excellent quality (F colour, VVS1 clarity): ₹11,000 to ₹17,000
1.00 carat
Good quality (H colour, VS2 clarity): ₹17,000 to ₹20,000
Excellent quality (F colour, VVS1 clarity): ₹20,000 to ₹23,000
Premium quality (D colour, IF clarity): ₹23,000 to ₹25,000
1.50 carat
Good quality (H colour, VS2 clarity): ₹28,000 to ₹42,000
Excellent quality (F colour, VVS1 clarity): ₹42,000 to ₹63,000
2.00 carat
Good quality (H colour, VS2 clarity): ₹42,000 to ₹63,000
Excellent quality (E colour, VVS2 clarity): ₹63,000 to ₹91,000
3.00 carat
Good quality (G colour, VS2 clarity): ₹70,000 to ₹1,05,000
Excellent quality (E colour, VVS1 clarity): ₹1,05,000 to ₹1,55,000
All prices are for loose certified stones. Final jewellery price adds the gold or platinum setting, making charges, and 3 percent GST.
Lab grown vs natural diamond price comparison
The price difference between lab grown and mined diamonds is not marginal. It is transformative.
A 1 carat natural diamond of comparable quality, G colour and VS2 clarity, costs approximately ₹1,50,000 to ₹3,00,000 in India in 2026. A lab grown diamond of identical specification costs ₹17,000 to ₹25,000. That is a saving of roughly 90 percent. Put another way, a lab grown stone of the same cut, colour, clarity and carat typically costs about a tenth of its mined equivalent.
The gap holds at higher carat weights too. A 3 carat natural diamond of good quality can cost ₹18,00,000 to ₹22,00,000 in India. The lab grown equivalent sits at ₹70,000 to ₹1,05,000. That is not just a discount, it is access to a stone that would otherwise be out of reach for most Indian buyers.
The diamonds are chemically identical. The price difference is purely a function of supply chain and market positioning.
What affects the final jewellery price beyond the diamond
Buyers often focus entirely on the diamond price and then feel surprised at the final bill. Here is what adds to the cost.
Gold or platinum setting
The gold in a finished piece is billed at the day's rate against the weight of the design, so it moves daily and it is often the largest single line on the bill once the stone is accounted for. Platinum runs higher again. The karat you choose matters a great deal here: a 9 karat setting costs close to half what 18 karat costs in metal, which is worked through in our 9K gold purity and price guide, and the middle ground is covered in 18K vs 14K for a ring in India.
Making charges
Making charges cover the craftsmanship and labour involved in creating the piece. In India these typically range from 8 to 25 percent of the gold value depending on design complexity. A simple solitaire ring will have lower making charges than an intricate halo or pavé setting.
GST
A mandatory 3 percent GST applies to all diamond jewellery in India, added to the total value of the piece.
Certification
The IGI certificate cost is usually included in the price at reputable retailers. If it is being added as a separate line item, that is worth questioning. Our guide to IGI certified lab grown diamonds explains what each line on the report means.
A practical example: a 1 carat, G colour, VS2, Excellent cut lab grown diamond priced at around ₹20,000, set in an 18K gold solitaire ring, will typically land somewhere between ₹45,000 and ₹65,000 finished, depending on the gold rate on the day, the weight of the design and the making charge. Ask for those four numbers separately and the total stops being a surprise.
What your budget buys
If you would rather start from a number than from a stone, this is roughly what each band covers.
- Under ₹50,000: daily wear diamond tops, delicate pendants, rings, nose screws and children's jewellery. See the under ₹50,000 collection.
- ₹50,000 to ₹1,00,000: solitaire lockets, studs, 1 carat and above rings, hoops and chain bracelets. See the under ₹1 lakh collection.
- ₹1,00,000 and above: statement solitaire tops, tennis bracelets, bangles and full bridal necklace sets, pieces that would cost several times more in mined diamonds. Browse the necklace collection.
Price red flags to watch for
Not all price points are fair, and the Indian market has a range of sellers operating at very different standards.
Too cheap with no certificate. An uncertified diamond sold at a seemingly attractive price is a significant risk. Without an IGI report you have no independent verification of the stone's quality, and an uncertified "lab grown diamond" at a suspiciously low price may not be a diamond at all.
Vague making charges. These should be expressed clearly as a percentage or a fixed amount. "As per design", with no specific number before you commit, is a red flag.
Price significantly below market for the stated grade. A D colour, IF clarity, 1 carat lab grown diamond offered at ₹8,000 does not exist. If the grade-to-price ratio looks too good, verify the certificate number on the IGI website before proceeding.
Bundled pricing without a diamond breakdown. Always ask for the diamond price and the setting price as separate line items, so you can compare the diamond value independently.
Compare total value, not sticker price
The cheapest quote is frequently the most expensive purchase. Before you compare two numbers, check that you are comparing the same thing: IGI certification, BIS hallmarking on the metal, warranty, and above all the buy-back and exchange terms in writing, including what they exclude.
A piece that is ₹2,000 cheaper but arrives without a certificate or a written exit costs you more in the long run. Ours are published in full on our return and buy-back policy page:
Buy-Back: cash return of 100% on gold and 80% on diamonds, and 100% on diamonds when you exchange rather than encash, valued at market rates on the date of return.
Customised and made to order products are non-returnable and non-exchangeable.
Terms and conditions apply. Full policy on our return policy page.
Three things in there do most of the work. The gold is valued at the market rate on the day you return the piece, rather than a scrap rate with a refining deduction taken off the top, so if gold has risen since you bought, your gold component rises with it. The cash figure is real cash rather than store credit, which means you can walk out with money and no new purchase. And the exchange figure is higher than the cash figure on the stone, because credit costs a jeweller less to give than money does.
Read the exclusions on any policy as carefully as the percentages. Custom and made to order work sits outside return and exchange terms across most of the trade, ours included, so if a future exit matters to you, that is a question to ask before you commission rather than after. The whole subject is worked through in lifetime exchange vs cash buyback, which is worth reading before you buy from anyone.
The smart buyer's value formula for 2026
If you want the best looking diamond for the most reasonable price, here is a combination that works for most budgets.
- Cut: Excellent or Very Good. Non-negotiable.
- Colour: G or H. Visually identical to D or E once set in white gold or platinum, and it saves 15 to 25 percent.
- Clarity: VS1 or VS2. Eye-clean, and it saves meaningfully against VVS grades with no visible difference.
- Carat: buy just below the round-number thresholds. A 0.90 carat diamond looks nearly identical to a 1.00 carat but costs noticeably less, and 1.45 versus 1.50 follows the same logic.
- Certification: IGI only. Verifiable, independent and universally recognised in India.
Understand the grades themselves in depth in our 4Cs guide. If the piece in question is an engagement ring, our engagement ring buying guide for India sets out the order to make each decision in.
Frequently asked questions
What is the price of a 1 carat lab grown diamond in India in 2026? A good quality, IGI certified 1 carat lab grown diamond costs roughly ₹17,000 to ₹25,000 for the loose stone, depending on cut, colour, clarity and shape. The most popular value range is around ₹19,000 to ₹23,000 for G to H colour and VS1 to VS2 clarity with an Excellent cut. Finished jewellery adds gold, making charges and GST on top.
How much cheaper are lab grown diamonds than mined diamonds in India? About 90 percent. A 1 carat mined diamond of comparable grade costs approximately ₹1,50,000 to ₹3,00,000, while the equivalent lab grown stone costs ₹17,000 to ₹25,000. Roughly speaking, a lab grown stone costs a tenth of its mined equivalent.
Can I sell a lab grown diamond back to the jeweller? That depends entirely on the jeweller, and it is worth asking before you buy rather than after. At Goenka Jewellers the terms on eligible pieces are 100% on gold and 80% on diamonds in cash, or 100% on diamonds if you exchange rather than encash, valued at market rates on the date of return. Customised and made to order products are non-returnable and non-exchangeable. Bring the original certificate and invoice.
Is there a price difference between CVD and HPHT diamonds? Both methods produce real diamonds and both are graded by IGI on the same scale. The grade on the certificate, not the growth method, is what determines price.
Do lab grown diamond prices vary between online and offline sellers? Yes. Online retailers typically price 15 to 25 percent lower than physical stores for comparable specifications, largely because they carry lower overhead. Verify the IGI certificate number regardless of where you buy.
Does the shape of a lab grown diamond affect the price? Yes. Round brilliants are the most expensive shape because they have the highest demand and lose the most rough material during cutting. Oval, cushion, pear and emerald cuts typically cost 10 to 20 percent less than round for the same grade.
Are lab grown diamond prices likely to fall further? Prices have already dropped 20 to 30 percent against 2023 levels and are now closer to a stable range. Significant further drops are less likely for certified, high quality stones, though uncertified or lower grade stones may continue to soften. Buy for the joy of wearing, not for speculation.
Do making charges vary a lot between jewellers in India? Yes, significantly, from 8 to 25 percent of gold value depending on the jeweller and the design. Always ask for making charges as a separate line item before confirming. Transparent retailers provide this without hesitation.
The bottom line
Lab grown diamonds offer Indian buyers something genuinely significant in 2026: access to certified, IGI graded, high quality diamonds at prices that were simply not possible with mined stones.
A buyer who could previously afford a 0.50 carat mined diamond for their engagement ring can now get a 1.50 carat lab grown diamond of equal or better quality for the same budget. That shift is real, and it is changing how India buys fine jewellery.
The price is not the whole story, though. A low price on an uncertified, poorly cut stone is not a deal, it is a disappointment waiting to happen. Use the 4Cs to evaluate quality, verify the IGI certificate, and buy from a retailer who is transparent about every line item in your bill.
Still wondering whether lab grown diamonds are genuinely worth it? Read Are lab grown diamonds real? 10 myths busted before you spend a rupee. Or book a free appointment in Kolkata or Delhi and we will give you an exact quote, broken into stone, gold, making and GST.