Natural Diamond Market
As of July 2026, there are 9,461,242 natural diamond listings available across retailers worldwide. The average price per carat is $12,359 NZD. Prices have decreased by 4.9% 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
4.8M
Oval
1.1M
Pear
897K
Emerald
757K
Cushion
453K
Princess
362K
Heart
356K
Marquise
264K
Radiant
247K
Asscher
165K
Price by carat bucket
Average price per carat rises sharply at the 1.00, 2.00 and 3.00ct marks.
0.20-0.29ct
$4.2K
0.30-0.49ct
$2.0K
0.50-0.74ct
$2.0K
0.75-0.99ct
$2.3K
1.00-1.24ct
$3.2K
1.25-1.49ct
$3.9K
1.50-1.99ct
$4.7K
2.00-2.49ct
$6.8K
2.50-2.99ct
$9.0K
3.00-3.99ct
$11.6K
4.00-4.99ct
$15.6K
5.00-9.99ct
$19.7K
10.00+ct
$32.6K
unknownct
$10.7K
Available Shapes
Round
4,816,287 listings
Avg: $14,241 NZD/ct
Oval
1,118,149 listings
Avg: $13,476 NZD/ct
Pear
897,008 listings
Avg: $14,588 NZD/ct
Emerald
756,775 listings
Avg: $12,321 NZD/ct
Cushion
453,132 listings
Avg: $12,855 NZD/ct
Princess
361,827 listings
Avg: $8,508 NZD/ct
Heart
355,988 listings
Avg: $11,660 NZD/ct
Marquise
264,049 listings
Avg: $14,773 NZD/ct
Radiant
246,851 listings
Avg: $12,221 NZD/ct
Asscher
165,370 listings
Avg: $10,917 NZD/ct
Other
18,524 listings
Avg: $10,177 NZD/ct
Baguette
4,276 listings
Avg: $6,449 NZD/ct
Trillion
2,906 listings
Avg: $6,971 NZD/ct
Sq_radiant
100 listings
Avg: $3,120 NZD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 281,440 | $7,037 NZD |
| 0.30-0.49 | 2,000,507 | $3,277 NZD |
| 0.50-0.74 | 2,611,004 | $3,371 NZD |
| 0.75-0.99 | 874,717 | $3,841 NZD |
| 1.00-1.24 | 1,749,478 | $5,257 NZD |
| 1.25-1.49 | 197,982 | $6,487 NZD |
| 1.50-1.99 | 855,991 | $7,909 NZD |
| 2.00-2.49 | 435,290 | $11,313 NZD |
| 2.50-2.99 | 117,074 | $14,995 NZD |
| 3.00-3.99 | 158,343 | $19,317 NZD |
| 4.00-4.99 | 40,854 | $25,936 NZD |
| 5.00-9.99 | 45,711 | $32,831 NZD |
| 10.00+ | 3,792 | $54,391 NZD |
| unknown | 89,059 | $17,805 NZD |