How much does a 5.00ct+ lab grown round diamond cost?

As of November 2026, 5.00ct+ lab grown round diamonds range from £96 GBP/ct to £10,373 GBP/ct, with an average of £649 GBP/ct.

What is the price range for 5.00ct+ lab grown round diamonds?

As of November 2026, the lowest listed price is £96 GBP per carat and the highest is £10,373 GBP per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

How many 5.00ct+ lab grown round diamonds are available?

There are 547,363 active lab grown round listings between 5.00ct+ across 100+ retailers in the Carat Hunter index, refreshed daily.

How much can I save by comparing retailers for a 5.00ct+ lab grown round diamond?

Approximately 51% of these diamonds are available at multiple retailers, with an average price spread of 89% between the cheapest and most expensive listing of the same stone.

Lab Grown Round Diamonds, 5.00ct+

Quick answer

As of November 2026, there are 547,363 listings of lab grown round diamonds between 5.00ct+ from at least 59 retailers. A typical stone in this range costs about £3,897 GBP in total, or £649 GBP per carat, and most listings sit between £96 GBP and £10,373 GBP per carat. About 51% of these stones are listed by more than one retailer, and the same stone is priced 89% apart on average between its cheapest and most expensive seller. The best value grade combination with real depth of stock is F to G VVS2 at £261 GBP per carat across 135,785 listings. The same shape in natural form runs about £15,340 GBP per carat, roughly 23.6 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. Round lab grown stones in the index: 425 USD per carat, +1.7% 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 547,363 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$3,157	$2,956	$1,017	$452	$466	$464	$307	$350	$164
F-G	$4,099	$1,520	$605	$350	$419	$433	$302	$272	-
H-I	-	$1,075	$758	$505	$460	$494	$361	$11K	$317
J-K	-	-	-	-	$549	-	-	-	-
N+	-	-	$752	$561	$510	$490	$377	$324	$194

Price by Colour & Clarity

Average price per carat for 5.00ct+ lab grown round diamonds by colour and clarity grade.

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	3,454	£2,354 GBP	117%
D-E	I	19	£123 GBP	90%
D-E	IF	6,421	£2,204 GBP	92%
D-E	SI1	2,172	£229 GBP	106%
D-E	SI2	86	£261 GBP	99%
D-E	VS1	83,823	£347 GBP	99%
D-E	VS2	18,479	£346 GBP	98%
D-E	VVS1	14,944	£759 GBP	79%
D-E	VVS2	163,054	£337 GBP	96%
F-G	FL	31	£3,057 GBP	34%
F-G	IF	1,367	£1,134 GBP	95%
F-G	SI1	3,705	£225 GBP	101%
F-G	SI2	242	£203 GBP	106%
F-G	VS1	71,728	£313 GBP	97%
F-G	VS2	22,667	£323 GBP	94%
F-G	VVS1	5,370	£451 GBP	79%
F-G	VVS2	135,785	£261 GBP	99%
H-I	I	10	£236 GBP	64%
H-I	IF	63	£801 GBP	86%
H-I	SI1	42	£269 GBP	77%
H-I	SI2	11	£7,866 GBP	19%
H-I	VS1	2,656	£343 GBP	93%
H-I	VS2	1,614	£368 GBP	93%
H-I	VVS1	230	£565 GBP	97%
H-I	VVS2	1,079	£377 GBP	117%
J-K	VS1	62	£409 GBP	71%
N+	I	13	£145 GBP	76%
N+	SI1	418	£281 GBP	75%
N+	SI2	158	£241 GBP	80%
N+	VS1	3,724	£380 GBP	97%
N+	VS2	1,823	£365 GBP	102%
N+	VVS1	64	£560 GBP	100%
N+	VVS2	1,668	£418 GBP	106%
N+	other	381	£1,334 GBP	23%

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