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 $262 NZD/ct to $22,560 NZD/ct, with an average of $1,897 NZD/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 $262 NZD per carat and the highest is $22,560 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 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 $7,207 NZD in total, or $1,897 NZD per carat, and most listings sit between $262 NZD and $22,560 NZD per carat. The best value grade combination with real depth of stock is F to G VS1 at $666 NZD per carat across 34,267 listings. The same shape in natural form runs about $21,150 NZD 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	$5,208 NZD	107%
D-E	IF	15,252	$3,089 NZD	117%
D-E	SI1	878	$629 NZD	172%
D-E	SI2	79	$1,186 NZD	113%
D-E	VS1	65,125	$769 NZD	107%
D-E	VS2	11,933	$726 NZD	131%
D-E	VVS1	35,752	$1,500 NZD	133%
D-E	VVS2	86,870	$898 NZD	111%
F-G	FL	113	$3,469 NZD	100%
F-G	IF	375	$2,101 NZD	108%
F-G	SI1	979	$629 NZD	152%
F-G	SI2	78	$988 NZD	171%
F-G	VS1	34,267	$666 NZD	114%
F-G	VS2	7,076	$744 NZD	148%
F-G	VVS1	3,915	$1,181 NZD	134%
F-G	VVS2	34,838	$713 NZD	120%
H-I	SI1	263	$1,042 NZD	190%
H-I	SI2	38	$1,409 NZD	111%
H-I	VS1	3,789	$802 NZD	143%
H-I	VS2	1,231	$1,235 NZD	101%
H-I	VVS1	191	$2,430 NZD	30%
H-I	VVS2	2,019	$733 NZD	155%
J-K	I	24	$10,273 NZD	4%
J-K	SI1	87	$3,258 NZD	7%
J-K	SI2	20	$9,042 NZD	80%
J-K	VS1	215	$961 NZD	85%
J-K	VS2	97	$2,161 NZD	101%
J-K	VVS2	124	$680 NZD	104%
L-M	VS1	69	$902 NZD	20%
L-M	VVS2	35	$890 NZD	23%
N+	IF	47	$3,847 NZD	18%
N+	SI1	683	$642 NZD	94%
N+	SI2	118	$694 NZD	72%
N+	VS1	11,995	$866 NZD	93%
N+	VS2	4,149	$787 NZD	90%
N+	VVS1	348	$1,122 NZD	99%
N+	VVS2	6,337	$918 NZD	94%
N+	other	1,741	$3,787 NZD	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