Natural Diamond Market
As of November 2026, there are 16,795,651 natural diamond listings available across retailers worldwide. The average price per carat is £4,665 GBP. Prices have decreased by 0.9% over the past 30 days.
Last updated: November 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
9.5M
Oval
1.6M
Pear
1.4M
Emerald
1.2M
Cushion
738K
Princess
579K
Marquise
557K
Heart
487K
Radiant
437K
Asscher
240K
Price by carat bucket
Average price per carat rises sharply at the 1.00, 2.00 and 3.00ct marks.
0.20-0.29ct
$4.8K
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
$4.0K
1.50-1.99ct
$4.8K
2.00-2.49ct
$6.9K
2.50-2.99ct
$8.7K
3.00-3.99ct
$11.4K
4.00-4.99ct
$15.1K
5.00-9.99ct
$19.4K
10.00+ct
$21.3K
unknownct
$9.2K
Available Shapes
Round
9,519,423 listings
Avg: £5,825 GBP/ct
Oval
1,629,051 listings
Avg: £5,657 GBP/ct
Pear
1,366,176 listings
Avg: £5,257 GBP/ct
Emerald
1,201,444 listings
Avg: £4,644 GBP/ct
Cushion
737,771 listings
Avg: £5,225 GBP/ct
Princess
578,992 listings
Avg: £3,707 GBP/ct
Marquise
557,153 listings
Avg: £5,631 GBP/ct
Heart
487,157 listings
Avg: £3,594 GBP/ct
Radiant
437,214 listings
Avg: £4,479 GBP/ct
Asscher
240,164 listings
Avg: £3,244 GBP/ct
Other
32,196 listings
Avg: £3,344 GBP/ct
Trillion
5,228 listings
Avg: £2,829 GBP/ct
Baguette
3,197 listings
Avg: £2,753 GBP/ct
Sq_radiant
485 listings
Avg: £2,033 GBP/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 337,318 | £3,581 GBP |
| 0.30-0.49 | 4,652,877 | £1,485 GBP |
| 0.50-0.74 | 4,507,887 | £1,498 GBP |
| 0.75-0.99 | 1,393,631 | £1,711 GBP |
| 1.00-1.24 | 2,712,814 | £2,367 GBP |
| 1.25-1.49 | 338,124 | £2,945 GBP |
| 1.50-1.99 | 1,420,584 | £3,590 GBP |
| 2.00-2.49 | 720,429 | £5,117 GBP |
| 2.50-2.99 | 201,155 | £6,484 GBP |
| 3.00-3.99 | 257,440 | £8,447 GBP |
| 4.00-4.99 | 66,822 | £11,226 GBP |
| 5.00-9.99 | 67,037 | £14,422 GBP |
| 10.00+ | 2,919 | £15,839 GBP |
| unknown | 116,614 | £6,829 GBP |