How much does a 3.00 to 4.99ct lab grown radiant diamond cost?

As of November 2026, 3.00 to 4.99ct lab grown radiant diamonds range from £60 GBP/ct to £3,295 GBP/ct, with an average of £521 GBP/ct.

What is the price range for 3.00 to 4.99ct lab grown radiant diamonds?

As of November 2026, the lowest listed price is £60 GBP per carat and the highest is £3,295 GBP per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

How many 3.00 to 4.99ct lab grown radiant diamonds are available?

There are 531,249 active lab grown radiant listings between 3.00 to 4.99ct across 100+ retailers in the Carat Hunter index, refreshed daily.

How much can I save by comparing retailers for a 3.00 to 4.99ct lab grown radiant diamond?

Approximately 42% of these diamonds are available at multiple retailers, with an average price spread of 96% between the cheapest and most expensive listing of the same stone.

Lab Grown Radiant Diamonds, 3.00 to 4.99ct

Quick answer

As of November 2026, there are 531,249 listings of lab grown radiant diamonds between 3.00 to 4.99ct from at least 62 retailers. A typical stone in this range costs about £1,981 GBP in total, or £521 GBP per carat, and most listings sit between £60 GBP and £3,295 GBP per carat. About 42% of these stones are listed by more than one retailer, and the same stone is priced 96% apart on average between its cheapest and most expensive seller. The best value grade combination with real depth of stock is F to G VS2 at £326 GBP per carat across 8,810 listings. The same shape in natural form runs about £9,651 GBP per carat, roughly 18.5 times more.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Radiant lab grown stones in the index: 489 USD per carat, -0.7% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: November 2026

Browse 531,249 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$1,631	$1,238	$934	$583	$528	$479	$409	$282	-
F-G	$1,731	$943	$653	$513	$480	$437	$375	$462	-
H-I	-	$1,132	$1,341	$446	$417	$556	$442	-	$164
J-K	-	-	-	-	$447	$641	$1,350	-	-
L-M	-	-	-	$508	$410	-	-	-	-
N+	-	$2,133	$543	$462	$405	$367	$302	$287	$192

Price by Colour & Clarity

Average price per carat for 3.00 to 4.99ct lab grown radiant diamonds by colour and clarity grade.

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	18,959	£1,216 GBP	90%
D-E	IF	35,215	£923 GBP	98%
D-E	SI1	1,168	£305 GBP	101%
D-E	SI2	91	£210 GBP	104%
D-E	VS1	87,234	£394 GBP	99%
D-E	VS2	15,676	£357 GBP	98%
D-E	VVS1	62,513	£697 GBP	89%
D-E	VVS2	136,090	£435 GBP	108%
F-G	FL	114	£1,291 GBP	63%
F-G	IF	1,381	£703 GBP	93%
F-G	SI1	1,171	£280 GBP	100%
F-G	SI2	71	£345 GBP	106%
F-G	VS1	36,251	£358 GBP	95%
F-G	VS2	8,810	£326 GBP	97%
F-G	VVS1	4,620	£487 GBP	108%
F-G	VVS2	36,663	£382 GBP	98%
H-I	I	11	£122 GBP	84%
H-I	IF	61	£844 GBP	78%
H-I	SI1	224	£329 GBP	116%
H-I	VS1	3,052	£311 GBP	113%
H-I	VS2	1,215	£415 GBP	113%
H-I	VVS1	235	£1,000 GBP	81%
H-I	VVS2	1,400	£333 GBP	122%
J-K	SI1	16	£1,006 GBP	78%
J-K	VS1	64	£334 GBP	87%
J-K	VS2	71	£478 GBP	86%
L-M	VS1	18	£306 GBP	70%
L-M	VVS2	15	£378 GBP	49%
N+	I	18	£143 GBP	115%
N+	IF	114	£1,591 GBP	52%
N+	SI1	2,539	£225 GBP	122%
N+	SI2	332	£214 GBP	123%
N+	VS1	37,488	£302 GBP	112%
N+	VS2	17,344	£274 GBP	117%
N+	VVS1	799	£405 GBP	103%
N+	VVS2	18,037	£345 GBP	102%
N+	other	2,169	£1,321 GBP	14%

Explore by Specification

D FL D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 D SI2 E FL E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 E SI2 F FL F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 F SI2 G FL G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 G SI2 H FL H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 H SI2 I FL I IF I VVS1 I VVS2 I VS1 I VS2 I SI1 I SI2 J FL J IF J VVS1 J VVS2 J VS1 J VS2 J SI1 J SI2