Natural Diamond Market
As of September 2026, there are 11,956,120 natural diamond listings available across retailers worldwide. The average price per carat is £5,738 GBP. 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
924K
Cushion
578K
Princess
439K
Marquise
404K
Heart
360K
Radiant
320K
Asscher
194K
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
6,334,797 listings
Avg: £6,536 GBP/ct
Oval
1,283,275 listings
Avg: £6,375 GBP/ct
Pear
1,092,947 listings
Avg: £6,884 GBP/ct
Emerald
924,326 listings
Avg: £5,694 GBP/ct
Cushion
577,968 listings
Avg: £6,100 GBP/ct
Princess
438,876 listings
Avg: £3,993 GBP/ct
Marquise
404,290 listings
Avg: £6,585 GBP/ct
Heart
360,189 listings
Avg: £5,447 GBP/ct
Radiant
319,565 listings
Avg: £5,643 GBP/ct
Asscher
193,767 listings
Avg: £4,950 GBP/ct
Other
19,484 listings
Avg: £4,864 GBP/ct
Baguette
3,590 listings
Avg: £3,142 GBP/ct
Trillion
2,930 listings
Avg: £3,177 GBP/ct
Sq_radiant
116 listings
Avg: £1,844 GBP/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 311,458 | £3,283 GBP |
| 0.30-0.49 | 2,902,582 | £1,569 GBP |
| 0.50-0.74 | 3,344,017 | £1,593 GBP |
| 0.75-0.99 | 1,055,578 | £1,806 GBP |
| 1.00-1.24 | 1,989,677 | £2,477 GBP |
| 1.25-1.49 | 247,558 | £3,115 GBP |
| 1.50-1.99 | 1,035,080 | £3,834 GBP |
| 2.00-2.49 | 524,677 | £5,327 GBP |
| 2.50-2.99 | 149,973 | £7,055 GBP |
| 3.00-3.99 | 197,136 | £8,956 GBP |
| 4.00-4.99 | 50,618 | £11,762 GBP |
| 5.00-9.99 | 48,597 | £14,928 GBP |
| 10.00+ | 3,955 | £25,282 GBP |
| unknown | 95,214 | £6,768 GBP |