Natural Diamond Market
As of September 2026, there are 11,835,337 natural diamond listings available across retailers worldwide. The average price per carat is $12,146 NZD. Prices have decreased by 9.1% over the past 30 days.
Last updated: September 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
6.3M
Oval
1.3M
Pear
1.1M
Emerald
912K
Cushion
575K
Princess
434K
Marquise
402K
Heart
354K
Radiant
318K
Asscher
193K
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
$3.1K
1.25-1.49ct
$4.0K
1.50-1.99ct
$4.9K
2.00-2.49ct
$6.8K
2.50-2.99ct
$9.0K
3.00-3.99ct
$11.4K
4.00-4.99ct
$14.9K
5.00-9.99ct
$19.0K
10.00+ct
$32.1K
unknownct
$8.6K
Available Shapes
Round
6,270,834 listings
Avg: $13,837 NZD/ct
Oval
1,271,426 listings
Avg: $13,495 NZD/ct
Pear
1,078,657 listings
Avg: $14,572 NZD/ct
Emerald
912,351 listings
Avg: $12,052 NZD/ct
Cushion
575,335 listings
Avg: $12,914 NZD/ct
Princess
433,543 listings
Avg: $8,453 NZD/ct
Marquise
401,711 listings
Avg: $13,940 NZD/ct
Heart
354,072 listings
Avg: $11,527 NZD/ct
Radiant
318,473 listings
Avg: $11,945 NZD/ct
Asscher
192,807 listings
Avg: $10,477 NZD/ct
Other
19,492 listings
Avg: $10,296 NZD/ct
Baguette
3,590 listings
Avg: $6,650 NZD/ct
Trillion
2,930 listings
Avg: $6,725 NZD/ct
Sq_radiant
116 listings
Avg: $3,904 NZD/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 310,869 | $6,950 NZD |
| 0.30-0.49 | 2,888,979 | $3,322 NZD |
| 0.50-0.74 | 3,281,976 | $3,368 NZD |
| 0.75-0.99 | 1,037,221 | $3,820 NZD |
| 1.00-1.24 | 1,973,298 | $5,247 NZD |
| 1.25-1.49 | 246,695 | $6,598 NZD |
| 1.50-1.99 | 1,028,742 | $8,122 NZD |
| 2.00-2.49 | 522,648 | $11,278 NZD |
| 2.50-2.99 | 149,753 | $14,932 NZD |
| 3.00-3.99 | 196,831 | $18,952 NZD |
| 4.00-4.99 | 50,585 | $24,902 NZD |
| 5.00-9.99 | 48,572 | $31,594 NZD |
| 10.00+ | 3,955 | $53,513 NZD |
| unknown | 95,213 | $14,325 NZD |