How much does a 1.00 to 1.49ct lab grown cushion diamond cost?

As of October 2026, 1.00 to 1.49ct lab grown cushion diamonds range from $248 AUD/ct to $7,402 AUD/ct, with an average of $933 AUD/ct.

What is the price range for 1.00 to 1.49ct lab grown cushion diamonds?

As of October 2026, the lowest listed price is $248 AUD per carat and the highest is $7,402 AUD per carat. The spread reflects differences in colour, clarity, cut and retailer pricing.

How many 1.00 to 1.49ct lab grown cushion diamonds are available?

There are 299,598 active lab grown cushion listings between 1.00 to 1.49ct across 100+ retailers in the Carat Hunter index, refreshed daily.

How much can I save by comparing retailers for a 1.00 to 1.49ct lab grown cushion diamond?

Approximately 38% of these diamonds are available at multiple retailers, with an average price spread of 88% between the cheapest and most expensive listing of the same stone.

Lab Grown Cushion Diamonds, 1.00 to 1.49ct

Quick answer

As of October 2026, there are 299,598 listings of lab grown cushion diamonds between 1.00 to 1.49ct from at least 61 retailers. A typical stone in this range costs about $1,120 AUD in total, or $933 AUD per carat, and most listings sit between $248 AUD and $7,402 AUD per carat. About 38% of these stones are listed by more than one retailer, and the same stone is priced 88% apart on average between its cheapest and most expensive seller. The best value grade combination with real depth of stock is F to G VS1 at $664 AUD per carat across 14,645 listings. The same shape in natural form runs about $4,800 AUD per carat, roughly 5.1 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 299,598 diamonds in Explorer

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$880	$887	$536	$502	$471	$479	$454	$464	-
F-G	$960	$888	$549	$482	$467	$479	$473	$568	-
H-I	-	-	$765	$594	$542	$615	$575	-	-
J-K	-	-	-	$670	$686	$915	$1,012	-	-
L-M	-	-	-	$411	$645	$704	-	-	-
N+	-	$1,011	$659	$594	$591	$577	$568	$762	$291

Price by Colour & Clarity

Average price per carat for 1.00 to 1.49ct lab grown cushion diamonds by colour and clarity grade.

Colour	Clarity	Listings	Avg Price/ct	Spread
D-E	FL	4,498	$1,251 AUD	100%
D-E	IF	6,586	$1,262 AUD	108%
D-E	SI1	1,423	$646 AUD	83%
D-E	SI2	137	$660 AUD	95%
D-E	VS1	71,737	$669 AUD	80%
D-E	VS2	16,632	$681 AUD	71%
D-E	VVS1	38,786	$763 AUD	97%
D-E	VVS2	91,849	$713 AUD	84%
F-G	FL	73	$1,364 AUD	95%
F-G	IF	371	$1,263 AUD	96%
F-G	SI1	663	$672 AUD	68%
F-G	SI2	25	$807 AUD	80%
F-G	VS1	14,645	$664 AUD	74%
F-G	VS2	5,073	$681 AUD	72%
F-G	VVS1	1,933	$780 AUD	82%
F-G	VVS2	11,983	$686 AUD	76%
H-I	SI1	46	$817 AUD	91%
H-I	VS1	816	$771 AUD	60%
H-I	VS2	395	$874 AUD	53%
H-I	VVS1	157	$1,087 AUD	56%
H-I	VVS2	440	$845 AUD	50%
J-K	SI1	15	$1,439 AUD	63%
J-K	VS1	39	$976 AUD	50%
J-K	VS2	12	$1,302 AUD	75%
J-K	VVS2	40	$953 AUD	86%
L-M	VS1	33	$917 AUD	43%
L-M	VS2	16	$1,001 AUD	32%
L-M	VVS2	21	$584 AUD	67%
N+	I	46	$414 AUD	83%
N+	IF	222	$1,437 AUD	118%
N+	SI1	998	$807 AUD	178%
N+	SI2	201	$1,083 AUD	218%
N+	VS1	12,384	$840 AUD	111%
N+	VS2	4,391	$821 AUD	112%
N+	VVS1	1,593	$936 AUD	110%
N+	VVS2	9,760	$845 AUD	110%
N+	other	1,559	$2,268 AUD	19%

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