How much does a 1.00 to 1.49ct lab grown heart diamond cost?

As of October 2026, 1.00 to 1.49ct lab grown heart diamonds range from £118 GBP/ct to £2,233 GBP/ct, with an average of £456 GBP/ct.

What is the price range for 1.00 to 1.49ct lab grown heart diamonds?

As of October 2026, the lowest listed price is £118 GBP per carat and the highest is £2,233 GBP per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

How many 1.00 to 1.49ct lab grown heart diamonds are available?

There are 239,644 active lab grown heart listings between 1.00 to 1.49ct across 100+ retailers in the Carat Hunter index, refreshed daily.

How much can I save by comparing retailers for a 1.00 to 1.49ct lab grown heart diamond?

Approximately 53% of these diamonds are available at multiple retailers, with an average price spread of 106% between the cheapest and most expensive listing of the same stone.

Lab Grown Heart Diamonds, 1.00 to 1.49ct

Quick answer

As of October 2026, there are 239,644 listings of lab grown heart diamonds between 1.00 to 1.49ct from at least 53 retailers. A typical stone in this range costs about £547 GBP in total, or £456 GBP per carat, and most listings sit between £118 GBP and £2,233 GBP per carat. About 53% of these stones are listed by more than one retailer, and the same stone is priced 106% 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 £296 GBP per carat across 9,056 listings. The same shape in natural form runs about £2,378 GBP per carat, roughly 5.2 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. Heart lab grown stones in the index: 421 USD per carat, -1.8% 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 239,644 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$626	$621	$446	$416	$404	$393	$358	$341	-
F-G	$594	$609	$410	$408	$412	$401	$478	$1,555	-
H-I	-	-	$359	$412	$505	$1,242	$860	$1,653	$1,309
J-K	-	-	-	$540	$504	$442	$903	-	-
L-M	-	-	-	-	$411	-	-	-	-
N+	-	$1,269	$527	$453	$443	$423	$339	$239	$335

Price by Colour & Clarity

Average price per carat for 1.00 to 1.49ct lab grown heart diamonds by colour and clarity grade.

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	3,615	£471 GBP	125%
D-E	IF	8,219	£467 GBP	110%
D-E	SI1	866	£269 GBP	117%
D-E	SI2	117	£256 GBP	102%
D-E	VS1	51,294	£304 GBP	98%
D-E	VS2	9,056	£296 GBP	103%
D-E	VVS1	33,688	£336 GBP	110%
D-E	VVS2	79,915	£313 GBP	109%
F-G	FL	34	£447 GBP	130%
F-G	IF	156	£458 GBP	98%
F-G	SI1	159	£360 GBP	96%
F-G	SI2	10	£1,170 GBP	33%
F-G	VS1	7,030	£310 GBP	85%
F-G	VS2	1,312	£302 GBP	95%
F-G	VVS1	2,094	£308 GBP	116%
F-G	VVS2	10,010	£307 GBP	99%
H-I	I	11	£985 GBP	65%
H-I	SI1	118	£647 GBP	95%
H-I	SI2	65	£1,244 GBP	51%
H-I	VS1	198	£380 GBP	83%
H-I	VS2	69	£935 GBP	87%
H-I	VVS1	42	£270 GBP	130%
H-I	VVS2	306	£310 GBP	101%
J-K	SI1	43	£680 GBP	63%
J-K	VS1	18	£379 GBP	133%
J-K	VS2	20	£333 GBP	99%
J-K	VVS2	90	£406 GBP	79%
L-M	VS1	31	£309 GBP	65%
N+	I	130	£252 GBP	138%
N+	IF	86	£955 GBP	98%
N+	SI1	1,326	£255 GBP	143%
N+	SI2	477	£180 GBP	196%
N+	VS1	13,253	£333 GBP	137%
N+	VS2	5,045	£318 GBP	140%
N+	VVS1	845	£397 GBP	144%
N+	VVS2	9,053	£341 GBP	133%
N+	other	843	£1,155 GBP	16%

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