Lab Grown Diamond Market
As of October 2026, there are 27,474,780 lab grown diamond listings available across retailers worldwide. The average price per carat is $1,338 NZD. Prices have increased by 0.6% over the past 30 days.
Last updated: October 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
9.2M
Oval
4.3M
Pear
2.9M
Emerald
2.5M
Radiant
2.1M
Marquise
1.9M
Cushion
1.8M
Princess
1.4M
Heart
847K
Asscher
489K
Price by carat bucket
Average price per carat rises sharply at the 1.00, 2.00 and 3.00ct marks.
0.20-0.29ct
$716
0.30-0.49ct
$805
0.50-0.74ct
$773
0.75-0.99ct
$679
1.00-1.24ct
$617
1.25-1.49ct
$602
1.50-1.99ct
$677
2.00-2.49ct
$825
2.50-2.99ct
$836
3.00-3.99ct
$810
4.00-4.99ct
$835
5.00-9.99ct
$885
10.00+ct
$577
unknownct
$1.1K
Available Shapes
Round
9,205,635 listings
Avg: $1,452 NZD/ct
Oval
4,263,872 listings
Avg: $1,358 NZD/ct
Pear
2,863,731 listings
Avg: $1,322 NZD/ct
Emerald
2,467,970 listings
Avg: $1,310 NZD/ct
Radiant
2,122,558 listings
Avg: $1,314 NZD/ct
Marquise
1,884,957 listings
Avg: $1,333 NZD/ct
Cushion
1,776,058 listings
Avg: $1,513 NZD/ct
Princess
1,360,401 listings
Avg: $1,411 NZD/ct
Heart
846,933 listings
Avg: $1,147 NZD/ct
Asscher
488,926 listings
Avg: $1,395 NZD/ct
Other
155,074 listings
Avg: $1,157 NZD/ct
Trillion
22,107 listings
Avg: $1,197 NZD/ct
Baguette
12,094 listings
Avg: $1,310 NZD/ct
Sq_radiant
4,464 listings
Avg: $1,029 NZD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 125,589 | $1,275 NZD |
| 0.30-0.49 | 929,041 | $1,435 NZD |
| 0.50-0.74 | 1,432,839 | $1,377 NZD |
| 0.75-0.99 | 973,132 | $1,209 NZD |
| 1.00-1.24 | 4,610,480 | $1,100 NZD |
| 1.25-1.49 | 1,079,219 | $1,073 NZD |
| 1.50-1.99 | 4,778,660 | $1,206 NZD |
| 2.00-2.49 | 3,965,782 | $1,471 NZD |
| 2.50-2.99 | 2,128,421 | $1,489 NZD |
| 3.00-3.99 | 3,341,262 | $1,444 NZD |
| 4.00-4.99 | 1,682,879 | $1,487 NZD |
| 5.00-9.99 | 2,121,146 | $1,577 NZD |
| 10.00+ | 289,264 | $1,028 NZD |
| unknown | 17,066 | $1,977 NZD |