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 $218 NZD/ct to $9,871 NZD/ct, with an average of $1,473 NZD/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 $218 NZD per carat and the highest is $9,871 NZD 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 $5,596 NZD in total, or $1,473 NZD per carat, and most listings sit between $218 NZD and $9,871 NZD 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 $918 NZD per carat across 9,035 listings. The same shape in natural form runs about $21,686 NZD 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	$3,804 NZD	107%
D-E	IF	23,956	$2,902 NZD	88%
D-E	SI1	1,115	$707 NZD	114%
D-E	SI2	79	$716 NZD	227%
D-E	VS1	80,691	$1,020 NZD	97%
D-E	VS2	16,048	$953 NZD	93%
D-E	VVS1	47,628	$1,751 NZD	87%
D-E	VVS2	97,794	$1,171 NZD	95%
F-G	FL	126	$3,310 NZD	93%
F-G	IF	532	$2,267 NZD	79%
F-G	SI1	1,325	$734 NZD	104%
F-G	SI2	85	$623 NZD	119%
F-G	VS1	43,596	$930 NZD	92%
F-G	VS2	9,035	$918 NZD	92%
F-G	VVS1	4,951	$1,389 NZD	94%
F-G	VVS2	42,974	$966 NZD	98%
H-I	SI1	310	$918 NZD	160%
H-I	SI2	44	$1,341 NZD	111%
H-I	VS1	5,050	$992 NZD	99%
H-I	VS2	1,410	$1,176 NZD	94%
H-I	VVS1	224	$2,513 NZD	52%
H-I	VVS2	2,619	$1,030 NZD	105%
J-K	SI1	19	$3,279 NZD	98%
J-K	VS1	253	$1,028 NZD	85%
J-K	VS2	68	$1,310 NZD	123%
J-K	VVS2	191	$839 NZD	103%
L-M	VS1	300	$1,092 NZD	33%
L-M	VS2	12	$933 NZD	31%
L-M	VVS2	106	$1,124 NZD	29%
N+	IF	66	$4,077 NZD	49%
N+	SI1	1,253	$769 NZD	108%
N+	SI2	185	$731 NZD	105%
N+	VS1	24,073	$1,035 NZD	96%
N+	VS2	8,472	$935 NZD	101%
N+	VVS1	698	$1,352 NZD	89%
N+	VVS2	12,626	$1,050 NZD	93%
N+	other	1,483	$4,075 NZD	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