Lab Grown Diamond Market
As of June 2026, there are 16,976,878 lab grown diamond listings available across retailers worldwide. The average price per carat is $2,499 NZD. Prices have decreased by 3.7% over the past 30 days.
Last updated: June 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
6.3M
Oval
2.9M
Pear
1.7M
Emerald
1.2M
Marquise
1.2M
Radiant
1.2M
Cushion
1.0M
Princess
770K
Heart
446K
Asscher
310K
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
$1.2K
0.75-0.99ct
$1.1K
1.00-1.24ct
$1.2K
1.25-1.49ct
$1.1K
1.50-1.99ct
$1.4K
2.00-2.49ct
$1.6K
2.50-2.99ct
$1.6K
3.00-3.99ct
$2.0K
4.00-4.99ct
$2.2K
5.00-9.99ct
$2.5K
10.00+ct
$1.3K
unknownct
$1.6K
Available Shapes
Round
6,288,643 listings
Avg: $3,865 NZD/ct
Oval
2,883,196 listings
Avg: $2,826 NZD/ct
Pear
1,654,442 listings
Avg: $2,586 NZD/ct
Emerald
1,200,467 listings
Avg: $2,542 NZD/ct
Marquise
1,160,353 listings
Avg: $2,009 NZD/ct
Radiant
1,158,572 listings
Avg: $2,250 NZD/ct
Cushion
1,017,134 listings
Avg: $2,369 NZD/ct
Princess
770,498 listings
Avg: $2,329 NZD/ct
Heart
446,299 listings
Avg: $2,055 NZD/ct
Asscher
310,254 listings
Avg: $2,266 NZD/ct
Other
64,628 listings
Avg: $1,827 NZD/ct
Trillion
14,146 listings
Avg: $1,468 NZD/ct
Baguette
7,240 listings
Avg: $1,159 NZD/ct
Sq_radiant
1,006 listings
Avg: $780 NZD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 72,803 | $1,975 NZD |
| 0.30-0.49 | 553,725 | $2,013 NZD |
| 0.50-0.74 | 1,027,634 | $1,929 NZD |
| 0.75-0.99 | 668,425 | $1,902 NZD |
| 1.00-1.24 | 3,120,760 | $1,918 NZD |
| 1.25-1.49 | 879,189 | $1,783 NZD |
| 1.50-1.99 | 3,293,565 | $2,392 NZD |
| 2.00-2.49 | 2,552,777 | $2,737 NZD |
| 2.50-2.99 | 1,173,817 | $2,616 NZD |
| 3.00-3.99 | 1,873,364 | $3,274 NZD |
| 4.00-4.99 | 803,173 | $3,745 NZD |
| 5.00-9.99 | 803,167 | $4,189 NZD |
| 10.00+ | 139,232 | $2,236 NZD |
| unknown | 15,247 | $2,645 NZD |