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

As of October 2026, 3.00 to 4.99ct lab grown cushion diamonds range from HK$960 HKD/ct to HK$43,469 HKD/ct, with an average of HK$6,485 HKD/ct.

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

As of October 2026, the lowest listed price is HK$960 HKD per carat and the highest is HK$43,469 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 449,258 active lab grown cushion 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 cushion diamond?

Approximately 42% of these diamonds are available at multiple retailers, with an average price spread of 95% between the cheapest and most expensive listing of the same stone.

Lab Grown Cushion Diamonds, 3.00 to 4.99ct

Quick answer

As of October 2026, there are 449,258 listings of lab grown cushion diamonds between 3.00 to 4.99ct from at least 63 retailers. A typical stone in this range costs about HK$24,645 HKD in total, or HK$6,485 HKD per carat, and most listings sit between HK$960 HKD and HK$43,469 HKD per carat. About 42% of these stones are listed by more than one retailer, and the same stone is priced 95% 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$4,042 HKD per carat across 9,035 listings. The same shape in natural form runs about HK$95,498 HKD per carat, roughly 14.7 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. Cushion lab grown stones in the index: 516 USD per carat, +6.9% 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 449,258 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2
D-E	$2,135	$1,629	$983	$658	$573	$535	$397	$402
F-G	$1,858	$1,273	$780	$542	$522	$515	$412	$350
H-I	-	-	$1,411	$578	$557	$660	$515	$753
J-K	-	-	-	$471	$577	$735	$1,841	-
L-M	-	-	-	$631	$613	$524	-	-
N+	-	$2,289	$759	$589	$581	$525	$432	$410

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	19,861	HK$16,750 HKD	107%
D-E	IF	23,956	HK$12,779 HKD	88%
D-E	SI1	1,115	HK$3,115 HKD	114%
D-E	SI2	79	HK$3,154 HKD	227%
D-E	VS1	80,691	HK$4,492 HKD	97%
D-E	VS2	16,048	HK$4,198 HKD	93%
D-E	VVS1	47,628	HK$7,712 HKD	87%
D-E	VVS2	97,794	HK$5,159 HKD	95%
F-G	FL	126	HK$14,574 HKD	93%
F-G	IF	532	HK$9,984 HKD	79%
F-G	SI1	1,325	HK$3,232 HKD	104%
F-G	SI2	85	HK$2,744 HKD	119%
F-G	VS1	43,596	HK$4,095 HKD	92%
F-G	VS2	9,035	HK$4,042 HKD	92%
F-G	VVS1	4,951	HK$6,116 HKD	94%
F-G	VVS2	42,974	HK$4,253 HKD	98%
H-I	SI1	310	HK$4,043 HKD	160%
H-I	SI2	44	HK$5,905 HKD	111%
H-I	VS1	5,050	HK$4,369 HKD	99%
H-I	VS2	1,410	HK$5,178 HKD	94%
H-I	VVS1	224	HK$11,067 HKD	52%
H-I	VVS2	2,619	HK$4,535 HKD	105%
J-K	SI1	19	HK$14,442 HKD	98%
J-K	VS1	253	HK$4,528 HKD	85%
J-K	VS2	68	HK$5,768 HKD	123%
J-K	VVS2	191	HK$3,694 HKD	103%
L-M	VS1	300	HK$4,808 HKD	33%
L-M	VS2	12	HK$4,109 HKD	31%
L-M	VVS2	106	HK$4,950 HKD	29%
N+	IF	66	HK$17,956 HKD	49%
N+	SI1	1,253	HK$3,388 HKD	108%
N+	SI2	185	HK$3,220 HKD	105%
N+	VS1	24,073	HK$4,557 HKD	96%
N+	VS2	8,472	HK$4,119 HKD	101%
N+	VVS1	698	HK$5,954 HKD	89%
N+	VVS2	12,626	HK$4,623 HKD	93%
N+	other	1,483	HK$17,946 HKD	13%

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