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

As of November 2026, 5.00ct+ lab grown cushion diamonds range from HK$956 HKD/ct to HK$67,230 HKD/ct, with an average of HK$7,125 HKD/ct.

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

As of November 2026, the lowest listed price is HK$956 HKD per carat and the highest is HK$67,230 HKD per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

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

There are 205,769 active lab grown cushion 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 cushion diamond?

Approximately 43% of these diamonds are available at multiple retailers, with an average price spread of 92% between the cheapest and most expensive listing of the same stone.

Lab Grown Cushion Diamonds, 5.00ct+

Quick answer

As of November 2026, there are 205,769 listings of lab grown cushion diamonds between 5.00ct+ from at least 59 retailers. A typical stone in this range costs about HK$42,751 HKD in total, or HK$7,125 HKD per carat, and most listings sit between HK$956 HKD and HK$67,230 HKD per carat. About 43% of these stones are listed by more than one retailer, and the same stone is priced 92% 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 HK$3,647 HKD per carat across 6,405 listings. The same shape in natural form runs about HK$140,527 HKD per carat, roughly 19.7 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. Cushion lab grown stones in the index: 555 USD per carat, +4.5% 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 205,769 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$3,011	$2,714	$1,139	$606	$577	$557	$390	$416	-
F-G	$4,108	$1,966	$935	$501	$477	$465	$309	$226	-
H-I	-	-	$1,934	$594	$492	$625	$2,929	-	-
J-K	-	-	$1,932	$494	$637	-	$689	-	-
L-M	-	-	-	$698	$618	-	-	-	-
N+	-	$1,845	$878	$543	$565	$523	$394	$386	$339

Price by Colour & Clarity

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

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	3,772	HK$23,622 HKD	83%
D-E	IF	3,400	HK$21,290 HKD	99%
D-E	SI1	372	HK$3,056 HKD	116%
D-E	SI2	44	HK$3,262 HKD	92%
D-E	VS1	32,436	HK$4,525 HKD	98%
D-E	VS2	4,728	HK$4,372 HKD	95%
D-E	VVS1	6,460	HK$8,935 HKD	101%
D-E	VVS2	49,838	HK$4,752 HKD	100%
F-G	FL	35	HK$32,234 HKD	58%
F-G	IF	76	HK$15,426 HKD	80%
F-G	SI1	489	HK$2,424 HKD	132%
F-G	SI2	28	HK$1,777 HKD	119%
F-G	VS1	29,144	HK$3,743 HKD	94%
F-G	VS2	6,405	HK$3,647 HKD	98%
F-G	VVS1	1,398	HK$7,338 HKD	91%
F-G	VVS2	33,738	HK$3,931 HKD	99%
H-I	SI1	12	HK$22,983 HKD	98%
H-I	VS1	1,613	HK$3,860 HKD	89%
H-I	VS2	468	HK$4,903 HKD	128%
H-I	VVS1	171	HK$15,171 HKD	56%
H-I	VVS2	878	HK$4,658 HKD	123%
J-K	SI1	13	HK$5,406 HKD	151%
J-K	VS1	63	HK$4,994 HKD	67%
J-K	VVS1	16	HK$15,162 HKD	63%
J-K	VVS2	20	HK$3,874 HKD	83%
L-M	VS1	22	HK$4,846 HKD	29%
L-M	VVS2	14	HK$5,476 HKD	37%
N+	I	19	HK$2,659 HKD	66%
N+	IF	10	HK$14,477 HKD	79%
N+	SI1	1,047	HK$3,095 HKD	110%
N+	SI2	93	HK$3,032 HKD	103%
N+	VS1	14,148	HK$4,433 HKD	98%
N+	VS2	7,597	HK$4,104 HKD	101%
N+	VVS1	103	HK$6,890 HKD	86%
N+	VVS2	5,964	HK$4,263 HKD	95%
N+	other	1,135	HK$15,008 HKD	12%

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