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

As of September 2026, 3.00 to 4.99ct lab grown cushion diamonds range from HK$1,207 HKD/ct to HK$104,123 HKD/ct, with an average of HK$8,754 HKD/ct.

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

As of September 2026, the lowest listed price is HK$1,207 HKD per carat and the highest is HK$104,123 HKD per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

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

There are 346,942 active lab grown cushion listings between 3.00 to 4.99ct across 100+ retailers in the Carat Hunter index, refreshed daily.

Lab Grown Cushion Diamonds, 3.00 to 4.99ct

Quick answer

As of September 2026, there are 346,942 lab grown cushion diamonds between 3.00 to 4.99ct listed by at least 54 retailers. A typical stone in this range costs about HK$33,264 HKD in total, or HK$8,754 HKD per carat, and most listings sit between HK$1,207 HKD and HK$104,123 HKD per carat. The best value grade combination with real depth of stock is F to G VS1 at HK$3,075 HKD per carat across 34,267 listings. The same shape in natural form runs about HK$97,617 HKD per carat, roughly 11.2 times more.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Cushion lab grown stones in the index: 466 USD per carat, -14.7% month on month. See the full index release

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

Last updated: September 2026

Browse 346,942 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$3,125	$1,853	$900	$539	$461	$435	$377	$712	-
F-G	$2,082	$1,261	$709	$428	$400	$447	$378	$593	-
H-I	-	-	$1,458	$440	$481	$741	$625	$846	-
J-K	-	-	-	$408	$576	$1,297	$1,955	$5,425	$6,164
L-M	-	-	-	$534	$541	-	-	-	-
N+	-	$2,308	$673	$551	$519	$472	$385	$416	-

Price by Colour & Clarity

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

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	15,792	HK$24,038 HKD	107%
D-E	IF	15,252	HK$14,258 HKD	117%
D-E	SI1	878	HK$2,902 HKD	172%
D-E	SI2	79	HK$5,476 HKD	113%
D-E	VS1	65,125	HK$3,547 HKD	107%
D-E	VS2	11,933	HK$3,349 HKD	131%
D-E	VVS1	35,752	HK$6,922 HKD	133%
D-E	VVS2	86,870	HK$4,145 HKD	111%
F-G	FL	113	HK$16,012 HKD	100%
F-G	IF	375	HK$9,699 HKD	108%
F-G	SI1	979	HK$2,905 HKD	152%
F-G	SI2	78	HK$4,561 HKD	171%
F-G	VS1	34,267	HK$3,075 HKD	114%
F-G	VS2	7,076	HK$3,435 HKD	148%
F-G	VVS1	3,915	HK$5,452 HKD	134%
F-G	VVS2	34,838	HK$3,292 HKD	120%
H-I	SI1	263	HK$4,809 HKD	190%
H-I	SI2	38	HK$6,505 HKD	111%
H-I	VS1	3,789	HK$3,701 HKD	143%
H-I	VS2	1,231	HK$5,700 HKD	101%
H-I	VVS1	191	HK$11,216 HKD	30%
H-I	VVS2	2,019	HK$3,383 HKD	155%
J-K	I	24	HK$47,416 HKD	4%
J-K	SI1	87	HK$15,038 HKD	7%
J-K	SI2	20	HK$41,733 HKD	80%
J-K	VS1	215	HK$4,434 HKD	85%
J-K	VS2	97	HK$9,975 HKD	101%
J-K	VVS2	124	HK$3,137 HKD	104%
L-M	VS1	69	HK$4,165 HKD	20%
L-M	VVS2	35	HK$4,108 HKD	23%
N+	IF	47	HK$17,757 HKD	18%
N+	SI1	683	HK$2,964 HKD	94%
N+	SI2	118	HK$3,203 HKD	72%
N+	VS1	11,995	HK$3,995 HKD	93%
N+	VS2	4,149	HK$3,633 HKD	90%
N+	VVS1	348	HK$5,180 HKD	99%
N+	VVS2	6,337	HK$4,239 HKD	94%
N+	other	1,741	HK$17,478 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