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

As of October 2026, 3.00 to 4.99ct lab grown princess diamonds range from £59 GBP/ct to £5,363 GBP/ct, with an average of £714 GBP/ct.

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

As of October 2026, the lowest listed price is £59 GBP per carat and the highest is £5,363 GBP per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

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

There are 257,356 active lab grown princess 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 princess diamond?

Approximately 45% of these diamonds are available at multiple retailers, with an average price spread of 117% between the cheapest and most expensive listing of the same stone.

Lab Grown Princess Diamonds, 3.00 to 4.99ct

Quick answer

As of October 2026, there are 257,356 listings of lab grown princess diamonds between 3.00 to 4.99ct from at least 56 retailers. A typical stone in this range costs about £2,713 GBP in total, or £714 GBP per carat, and most listings sit between £59 GBP and £5,363 GBP per carat. About 45% of these stones are listed by more than one retailer, and the same stone is priced 117% apart on average between its cheapest and most expensive seller. The best value grade combination with real depth of stock is D to E VS2 at £298 GBP per carat across 10,380 listings. The same shape in natural form runs about £8,151 GBP per carat, roughly 11.4 times more.

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

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Princess lab grown stones in the index: 461 USD per carat, -4.8% 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: October 2026

Browse 257,356 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$2,349	$2,272	$856	$488	$432	$396	$354	$339	-
F-G	$3,129	-	$708	$443	$420	$431	$363	$277	-
H-I	-	$2,473	$1,252	$433	$467	$702	$456	$683	$134
J-K	-	-	-	$367	$457	$1,610	$1,728	$3,141	-
L-M	-	-	-	-	-	$2,410	-	-	-
N+	-	-	$577	$464	$503	$589	$1,545	$601	-

Price by Colour & Clarity

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

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	8,138	£1,764 GBP	80%
D-E	IF	6,641	£1,706 GBP	90%
D-E	SI1	525	£266 GBP	100%
D-E	SI2	32	£255 GBP	116%
D-E	VS1	64,486	£324 GBP	106%
D-E	VS2	10,380	£298 GBP	118%
D-E	VVS1	15,451	£643 GBP	100%
D-E	VVS2	62,912	£366 GBP	113%
F-G	FL	33	£2,350 GBP	52%
F-G	SI1	879	£273 GBP	114%
F-G	SI2	64	£208 GBP	131%
F-G	VS1	29,165	£315 GBP	103%
F-G	VS2	6,857	£324 GBP	104%
F-G	VVS1	2,782	£532 GBP	113%
F-G	VVS2	30,003	£332 GBP	105%
H-I	I	10	£101 GBP	103%
H-I	IF	15	£1,857 GBP	19%
H-I	SI1	288	£342 GBP	216%
H-I	SI2	25	£513 GBP	289%
H-I	VS1	4,890	£351 GBP	144%
H-I	VS2	1,518	£527 GBP	223%
H-I	VVS1	258	£940 GBP	104%
H-I	VVS2	1,853	£325 GBP	109%
J-K	SI1	72	£1,298 GBP	29%
J-K	SI2	53	£2,359 GBP	17%
J-K	VS1	127	£343 GBP	216%
J-K	VS2	63	£1,209 GBP	83%
J-K	VVS2	91	£275 GBP	109%
L-M	VS2	31	£1,810 GBP	28%
N+	SI1	741	£1,160 GBP	115%
N+	SI2	224	£451 GBP	420%
N+	VS1	4,497	£378 GBP	127%
N+	VS2	2,233	£443 GBP	112%
N+	VVS1	57	£434 GBP	105%
N+	VVS2	1,634	£348 GBP	114%
N+	other	328	£1,495 GBP	28%

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