Lab Grown Diamond Market
As of September 2026, there are 19,372,058 lab grown diamond listings available across retailers worldwide. The average price per carat is $1,254 USD. Prices have decreased by 7.9% 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
7.3M
Oval
3.0M
Pear
2.0M
Emerald
1.5M
Cushion
1.3M
Radiant
1.3M
Marquise
1.2M
Princess
911K
Heart
453K
Asscher
276K
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
$966
1.25-1.49ct
$900
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
7,267,686 listings
Avg: $1,906 USD/ct
Oval
3,045,304 listings
Avg: $1,519 USD/ct
Pear
2,021,067 listings
Avg: $1,303 USD/ct
Emerald
1,453,732 listings
Avg: $1,260 USD/ct
Cushion
1,328,456 listings
Avg: $1,147 USD/ct
Radiant
1,290,071 listings
Avg: $1,139 USD/ct
Marquise
1,197,026 listings
Avg: $1,137 USD/ct
Princess
910,676 listings
Avg: $1,174 USD/ct
Heart
452,862 listings
Avg: $1,125 USD/ct
Asscher
275,998 listings
Avg: $1,115 USD/ct
Other
101,451 listings
Avg: $746 USD/ct
Trillion
18,470 listings
Avg: $710 USD/ct
Baguette
7,693 listings
Avg: $529 USD/ct
Sq_radiant
1,566 listings
Avg: $455 USD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 88,666 | $1,065 USD |
| 0.30-0.49 | 789,340 | $1,110 USD |
| 0.50-0.74 | 1,264,182 | $1,054 USD |
| 0.75-0.99 | 806,090 | $1,066 USD |
| 1.00-1.24 | 3,649,740 | $966 USD |
| 1.25-1.49 | 864,192 | $900 USD |
| 1.50-1.99 | 3,540,053 | $1,218 USD |
| 2.00-2.49 | 2,633,463 | $1,368 USD |
| 2.50-2.99 | 1,412,514 | $1,325 USD |
| 3.00-3.99 | 2,012,383 | $1,487 USD |
| 4.00-4.99 | 1,078,890 | $1,670 USD |
| 5.00-9.99 | 1,051,700 | $1,818 USD |
| 10.00+ | 162,962 | $1,420 USD |
| unknown | 17,883 | $1,371 USD |