Lab-grown diamond prices per carat depend on shape, size band and color-clarity grade. At Sheladiya Diamond, our 2026 list starts at INR 5,000 per carat for melee and reaches INR 9,000 per carat for quality A fancy shapes from 0.50 to 0.99 ct. Prices change with the market, so always confirm before you order.

*Last updated: 10 October 2026. Written by the Sheladiya Diamond team in Surat, which has grown and polished diamonds since 2017.*

What does a lab-grown diamond cost per carat in 2026?

Our published list, dated 26 September 2026, prices every stone per carat in Indian rupees. Quality A means EF color with VVS or VS clarity. Quality B means GH color with VS or SI clarity.

| Category | Size band | Quality A (INR per ct) | Quality B (INR per ct) |
|---|---|---|---|
| Melee | 1.80 to 2.60 mm | 5,000 | 4,500 |
| Star | 1.25 to 1.70 mm | 5,500 to 6,500 | 5,000 to 6,000 |
| Eleven and Fourteen | 2.70 to 3.60 mm | 6,500 | 6,000 |
| Round 1/6 to 1/3 | 3.70 to 4.40 mm (0.18 to 0.49 ct) | 7,500 | 7,000 |
| Round 0.50 to 0.99 ct | Per carat | 7,500 | 7,000 |
| Fancy shapes 0.10 to 0.49 ct | Oval, pear, emerald, princess, marquise | 10,000 | 9,000 |
| Fancy shapes 0.50 to 0.99 ct | Oval, pear, emerald, princess, marquise | 9,000 | 8,000 |

Source: CVD Lab Grown Diamond Price List, 26 September 2026.

Why do round and fancy prices differ?

Round stones follow a sieve system. Each sieve sets a millimeter range, and each range sets a weight and a piece count per carat. A 0.25 ct round sits in the 4.10 to 4.20 mm band. At INR 7,500 per carat, the stone costs INR 1,875 before any setting.

Fancy shapes carry a higher rate in the smaller bands. Cutting an oval, pear or emerald from rough takes more planning. Yield is lower than for a round, so the per-carat price rises.

How much does a 1 carat lab-grown diamond cost?

Our list does not show a 1.00 ct round line. Round prices stop at the 0.50 to 0.99 ct band. For a 1 ct stone, contact our team with the shape, color, clarity and certificate you need. We will quote from current stock and confirm availability first.

What drives the price up or down?

  • Size: Larger stones cost more per carat in most markets, but sieve bands keep prices stable within a range.
  • Color and clarity: Quality A (EF, VVS or VS) costs more than Quality B (GH, VS or SI) in every band on our list.
  • Shape: Fancy shapes cost more than rounds in the 0.10 to 0.49 ct band.
  • Certification: Certified and non-certified stones are priced differently. [NEED: confirm the price difference for IGI, GIA and GCAL certified stones.]
  • Market timing: Wholesale prices have fallen fast. Analyst Edahn Golan's Q1 2026 wholesale list, reported by JCK, showed midstream lab-grown prices down 14% year on year. A 3 ct VVS D round sold for USD 126 per carat, 30% lower than in 2025.

How should a jeweler compare quotes?

1. Ask for the sieve or carat band, not just the total price.
2. Confirm the color and clarity grade in writing.
3. Check whether the quote includes certification and GST. [NEED: confirm GST treatment on trade quotes.]
4. Ask about lead time and minimum order. Our production team can run dedicated parcels with matched specifications.
5. Ask for the stock photo and 360 video before you commit.

Our services page covers loose diamonds, custom jewelry and private-label work for trade buyers.

Frequently asked questions

Are lab-grown diamond prices still falling?
Wholesale prices fell sharply through early 2026, according to the Q1 2026 list reported by JCK. Retail prices lag wholesale, so retail margins may move more slowly.

Is the price list final?
No. Prices may change at the time of ordering. We confirm stock availability before any order is placed.

Do you cut stones to my specification?
Yes. We also cut fancy shapes to customer requirements.

What is the minimum order?
[NEED: confirm minimum order quantity for loose stones by category.]

How do I get a quote for a specific stone?
Call +91 98251 25050 or +91 98251 65050, or send your specification through the contact form.