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 $219 AUD/ct to $18,872 AUD/ct, with an average of $1,587 AUD/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 $219 AUD per carat and the highest is $18,872 AUD 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 $6,029 AUD in total, or $1,587 AUD per carat, and most listings sit between $219 AUD and $18,872 AUD per carat. The best value grade combination with real depth of stock is F to G VS1 at $557 AUD per carat across 34,267 listings. The same shape in natural form runs about $17,693 AUD 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	$4,357 AUD	107%
D-E	IF	15,252	$2,584 AUD	117%
D-E	SI1	878	$526 AUD	172%
D-E	SI2	79	$992 AUD	113%
D-E	VS1	65,125	$643 AUD	107%
D-E	VS2	11,933	$607 AUD	131%
D-E	VVS1	35,752	$1,255 AUD	133%
D-E	VVS2	86,870	$751 AUD	111%
F-G	FL	113	$2,902 AUD	100%
F-G	IF	375	$1,758 AUD	108%
F-G	SI1	979	$526 AUD	152%
F-G	SI2	78	$827 AUD	171%
F-G	VS1	34,267	$557 AUD	114%
F-G	VS2	7,076	$623 AUD	148%
F-G	VVS1	3,915	$988 AUD	134%
F-G	VVS2	34,838	$597 AUD	120%
H-I	SI1	263	$872 AUD	190%
H-I	SI2	38	$1,179 AUD	111%
H-I	VS1	3,789	$671 AUD	143%
H-I	VS2	1,231	$1,033 AUD	101%
H-I	VVS1	191	$2,033 AUD	30%
H-I	VVS2	2,019	$613 AUD	155%
J-K	I	24	$8,594 AUD	4%
J-K	SI1	87	$2,726 AUD	7%
J-K	SI2	20	$7,564 AUD	80%
J-K	VS1	215	$804 AUD	85%
J-K	VS2	97	$1,808 AUD	101%
J-K	VVS2	124	$568 AUD	104%
L-M	VS1	69	$755 AUD	20%
L-M	VVS2	35	$745 AUD	23%
N+	IF	47	$3,218 AUD	18%
N+	SI1	683	$537 AUD	94%
N+	SI2	118	$580 AUD	72%
N+	VS1	11,995	$724 AUD	93%
N+	VS2	4,149	$658 AUD	90%
N+	VVS1	348	$939 AUD	99%
N+	VVS2	6,337	$768 AUD	94%
N+	other	1,741	$3,168 AUD	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