How much does a lab grown marquise diamond cost in Australia?

Lab Grown marquise diamonds in Australia list between $191 AUD and $28,822 AUD AUD, with a median of $1,602 AUD across 1,237,162 active listings.

Is a lab grown marquise diamond worth it in Australia?

Lab Grown marquise stones in Australia are priced in AUD and reflect local retailer markup. Cross-retailer aggregation across more than one hundred sources lets you see if a particular listing is above or below the regional median.

Where does Australia pricing data come from for marquise diamonds?

Carat Hunter aggregates live retailer pricing from more than one hundred jewellery sites globally and shows the Australia view in AUD. Pricing for marquise stones is refreshed daily.

Lab Grown Marquise Diamond Prices in Australia

Quick answer

As of September 2026, Carat Hunter tracks 1,237,162 lab grown marquise diamonds listed by at least 60 retailers. The median listing sits at $1,602 AUD per carat, and most stock falls between $191 AUD and $28,822 AUD per carat. About 0% 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 most common size is 1.00 to 1.24 carats, with 266,148 listings at an average of $1,529 AUD per carat. The best value grade combination with real depth of stock is F to G VS1 at $689 AUD per carat across 101,658 listings. The same shape in natural form runs about $11,577 AUD per carat, roughly 7.2 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. Marquise lab grown stones in the index: 500 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

By Carat Weight

Price Distribution

LowHigh

Colour	FL	IF	VVS1	VVS2	VS1	VS2	SI1	SI2	I
D-E	$2,385	$1,902	$858	$560	$578	$585	$543	$567	$1,297
F-G	$2,086	$1,329	$727	$528	$491	$523	$444	$2,628	$1,465
H-I	-	$4,259	$1,260	$552	$622	$912	$1,365	$2,558	$1,807
J-K	-	$1,696	$1,430	$2,376	$1,223	$1,409	$1,562	$2,033	$2,768
L-M	-	-	-	$623	$473	-	$2,493	$1,229	-
N+	-	$1,751	$854	$668	$633	$726	$672	$560	-

By Carat Weight

Price by Colour & Clarity

Colour	Clarity	Listings	Avg Price/ct
D-E	FL	44,837	$3,348 AUD
D-E	I	37	$1,820 AUD
D-E	IF	45,530	$2,670 AUD
D-E	SI1	2,744	$761 AUD
D-E	SI2	220	$796 AUD
D-E	VS1	263,742	$811 AUD
D-E	VS2	59,669	$821 AUD
D-E	VVS1	145,971	$1,204 AUD
D-E	VVS2	364,938	$786 AUD
F-G	FL	114	$2,928 AUD
F-G	I	37	$2,056 AUD
F-G	IF	1,351	$1,865 AUD
F-G	SI1	1,608	$623 AUD
F-G	SI2	165	$3,688 AUD
F-G	VS1	101,658	$689 AUD
F-G	VS2	17,905	$733 AUD
F-G	VVS1	14,535	$1,020 AUD
F-G	VVS2	128,592	$741 AUD
H-I	I	67	$2,536 AUD
H-I	IF	83	$5,977 AUD
H-I	SI1	756	$1,916 AUD
H-I	SI2	151	$3,590 AUD
H-I	VS1	4,064	$873 AUD
H-I	VS2	1,908	$1,281 AUD
H-I	VVS1	653	$1,768 AUD
H-I	VVS2	3,405	$775 AUD
J-K	I	90	$3,884 AUD
J-K	IF	21	$2,380 AUD
J-K	SI1	777	$2,192 AUD
J-K	SI2	158	$2,854 AUD
J-K	VS1	204	$1,717 AUD
J-K	VS2	383	$1,977 AUD
J-K	VVS1	54	$2,006 AUD
J-K	VVS2	173	$3,335 AUD
L-M	SI1	11	$3,499 AUD
L-M	SI2	40	$1,725 AUD
L-M	VS1	35	$663 AUD
L-M	VVS2	12	$874 AUD
N+	IF	251	$2,458 AUD
N+	SI1	736	$943 AUD
N+	SI2	86	$786 AUD
N+	VS1	11,851	$889 AUD
N+	VS2	4,287	$1,019 AUD
N+	VVS1	642	$1,199 AUD
N+	VVS2	9,618	$938 AUD
N+	other	2,993	$2,442 AUD