Lab Grown Diamond Market
As of July 2026, there are 17,661,592 lab grown diamond listings available across retailers worldwide. The average price per carat is $2,283 NZD. Prices have decreased by 4.4% over the past 30 days.
Last updated: July 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
6.5M
Oval
2.9M
Pear
1.8M
Emerald
1.3M
Cushion
1.2M
Radiant
1.1M
Marquise
938K
Princess
845K
Heart
514K
Asscher
377K
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
$1.2K
0.50-0.74ct
$1.1K
0.75-0.99ct
$1.1K
1.00-1.24ct
$1.1K
1.25-1.49ct
$995
1.50-1.99ct
$1.3K
2.00-2.49ct
$1.5K
2.50-2.99ct
$1.5K
3.00-3.99ct
$1.7K
4.00-4.99ct
$1.8K
5.00-9.99ct
$2.0K
10.00+ct
$1.4K
unknownct
$1.5K
Available Shapes
Round
6,543,347 listings
Avg: $3,504 NZD/ct
Oval
2,888,174 listings
Avg: $2,699 NZD/ct
Pear
1,822,778 listings
Avg: $2,363 NZD/ct
Emerald
1,324,967 listings
Avg: $2,225 NZD/ct
Cushion
1,157,691 listings
Avg: $2,130 NZD/ct
Radiant
1,141,693 listings
Avg: $1,972 NZD/ct
Marquise
937,894 listings
Avg: $1,935 NZD/ct
Princess
844,841 listings
Avg: $2,161 NZD/ct
Heart
513,621 listings
Avg: $2,131 NZD/ct
Asscher
377,373 listings
Avg: $2,182 NZD/ct
Other
82,402 listings
Avg: $1,418 NZD/ct
Trillion
17,182 listings
Avg: $1,210 NZD/ct
Baguette
7,973 listings
Avg: $925 NZD/ct
Sq_radiant
1,656 listings
Avg: $776 NZD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 81,821 | $1,886 NZD |
| 0.30-0.49 | 669,591 | $2,005 NZD |
| 0.50-0.74 | 1,230,337 | $1,898 NZD |
| 0.75-0.99 | 734,599 | $1,892 NZD |
| 1.00-1.24 | 3,165,066 | $1,829 NZD |
| 1.25-1.49 | 775,885 | $1,659 NZD |
| 1.50-1.99 | 3,290,268 | $2,187 NZD |
| 2.00-2.49 | 2,520,406 | $2,519 NZD |
| 2.50-2.99 | 1,235,065 | $2,429 NZD |
| 3.00-3.99 | 1,892,273 | $2,828 NZD |
| 4.00-4.99 | 910,038 | $3,028 NZD |
| 5.00-9.99 | 976,375 | $3,303 NZD |
| 10.00+ | 162,399 | $2,402 NZD |
| unknown | 17,469 | $2,456 NZD |