Lab Grown Diamond Market
As of April 2026, there are 14,797,678 lab grown diamond listings available across retailers worldwide. The average price per carat is $2,139 NZD. Prices have increased by 0.1% over the past 30 days.
Last updated: April 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
5.5M
Oval
2.5M
Pear
1.3M
Emerald
1.2M
Radiant
1.1M
Marquise
819K
Cushion
802K
Princess
740K
Heart
384K
Asscher
263K
Price by carat bucket
Average price per carat rises sharply at the 1.00, 2.00 and 3.00ct marks.
0.20-0.29ct
$1.2K
0.30-0.49ct
$1.2K
0.50-0.74ct
$1.1K
0.75-0.99ct
$1.1K
1.00-1.24ct
$1.1K
1.25-1.49ct
$988
1.50-1.99ct
$1.2K
2.00-2.49ct
$1.4K
2.50-2.99ct
$1.4K
3.00-3.99ct
$1.4K
4.00-4.99ct
$1.8K
5.00-9.99ct
$1.8K
10.00+ct
$947
unknownct
$1.6K
Available Shapes
Round
5,549,108 listings
Avg: $3,364 NZD/ct
Oval
2,500,513 listings
Avg: $2,375 NZD/ct
Pear
1,325,237 listings
Avg: $2,218 NZD/ct
Emerald
1,204,677 listings
Avg: $2,119 NZD/ct
Radiant
1,135,952 listings
Avg: $1,861 NZD/ct
Marquise
819,328 listings
Avg: $1,772 NZD/ct
Cushion
801,906 listings
Avg: $1,938 NZD/ct
Princess
740,024 listings
Avg: $2,007 NZD/ct
Heart
384,497 listings
Avg: $1,940 NZD/ct
Asscher
263,332 listings
Avg: $1,817 NZD/ct
Other
51,819 listings
Avg: $1,566 NZD/ct
Trillion
13,505 listings
Avg: $1,305 NZD/ct
Baguette
6,669 listings
Avg: $989 NZD/ct
Sq_radiant
1,111 listings
Avg: $719 NZD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 91,877 | $1,936 NZD |
| 0.30-0.49 | 704,767 | $1,994 NZD |
| 0.50-0.74 | 1,010,128 | $1,881 NZD |
| 0.75-0.99 | 649,923 | $1,789 NZD |
| 1.00-1.24 | 2,366,105 | $1,854 NZD |
| 1.25-1.49 | 700,839 | $1,647 NZD |
| 1.50-1.99 | 2,757,299 | $2,006 NZD |
| 2.00-2.49 | 2,232,717 | $2,346 NZD |
| 2.50-2.99 | 979,927 | $2,263 NZD |
| 3.00-3.99 | 1,734,757 | $2,414 NZD |
| 4.00-4.99 | 706,024 | $2,962 NZD |
| 5.00-9.99 | 730,258 | $3,031 NZD |
| 10.00+ | 114,486 | $1,578 NZD |
| unknown | 18,571 | $2,680 NZD |