Lab Grown Diamond Market
As of September 2026, there are 20,139,017 lab grown diamond listings available across retailers worldwide. The average price per carat is $1,751 AUD. Prices have decreased by 8.6% over the past 30 days.
Last updated: September 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
7.7M
Oval
3.2M
Pear
2.1M
Emerald
1.5M
Cushion
1.4M
Radiant
1.3M
Marquise
1.2M
Princess
921K
Heart
472K
Asscher
287K
Price by carat bucket
Average price per carat rises sharply at the 1.00, 2.00 and 3.00ct marks.
0.20-0.29ct
$1.1K
0.30-0.49ct
$1.1K
0.50-0.74ct
$1.1K
0.75-0.99ct
$1.1K
1.00-1.24ct
$967
1.25-1.49ct
$898
1.50-1.99ct
$1.2K
2.00-2.49ct
$1.4K
2.50-2.99ct
$1.3K
3.00-3.99ct
$1.5K
4.00-4.99ct
$1.7K
5.00-9.99ct
$1.8K
10.00+ct
$1.4K
unknownct
$1.4K
Available Shapes
Round
7,723,200 listings
Avg: $2,614 AUD/ct
Oval
3,170,792 listings
Avg: $2,104 AUD/ct
Pear
2,061,319 listings
Avg: $1,807 AUD/ct
Emerald
1,480,268 listings
Avg: $1,776 AUD/ct
Cushion
1,356,460 listings
Avg: $1,613 AUD/ct
Radiant
1,307,649 listings
Avg: $1,610 AUD/ct
Marquise
1,229,335 listings
Avg: $1,603 AUD/ct
Princess
921,383 listings
Avg: $1,647 AUD/ct
Heart
472,139 listings
Avg: $1,602 AUD/ct
Asscher
286,545 listings
Avg: $1,551 AUD/ct
Other
102,133 listings
Avg: $1,058 AUD/ct
Trillion
18,508 listings
Avg: $999 AUD/ct
Baguette
7,710 listings
Avg: $744 AUD/ct
Sq_radiant
1,576 listings
Avg: $645 AUD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 93,452 | $1,482 AUD |
| 0.30-0.49 | 818,709 | $1,558 AUD |
| 0.50-0.74 | 1,298,805 | $1,480 AUD |
| 0.75-0.99 | 828,665 | $1,497 AUD |
| 1.00-1.24 | 3,815,263 | $1,356 AUD |
| 1.25-1.49 | 889,005 | $1,261 AUD |
| 1.50-1.99 | 3,678,319 | $1,685 AUD |
| 2.00-2.49 | 2,760,213 | $1,913 AUD |
| 2.50-2.99 | 1,462,511 | $1,848 AUD |
| 3.00-3.99 | 2,100,204 | $2,104 AUD |
| 4.00-4.99 | 1,120,993 | $2,319 AUD |
| 5.00-9.99 | 1,094,543 | $2,480 AUD |
| 10.00+ | 160,458 | $2,005 AUD |
| unknown | 17,877 | $1,924 AUD |