Lab Grown Diamond Market
As of April 2026, there are 15,089,195 lab grown diamond listings available across retailers worldwide. The average price per carat is £1,036 GBP. Prices have increased by 0.1% over the past 30 days.
Last updated: April 2026
Available by shape
Listing counts across the top 10 most-stocked shapes for this origin.
Round
5.6M
Oval
2.6M
Pear
1.3M
Emerald
1.2M
Radiant
1.2M
Marquise
831K
Cushion
820K
Princess
759K
Heart
398K
Asscher
276K
Price by carat bucket
Average price per carat rises sharply at the 1.00, 2.00 and 3.00ct marks.
0.20-0.29ct
$1.1K
0.30-0.49ct
$1.2K
0.50-0.74ct
$1.1K
0.75-0.99ct
$1.1K
1.00-1.24ct
$1.1K
1.25-1.49ct
$984
1.50-1.99ct
$1.2K
2.00-2.49ct
$1.5K
2.50-2.99ct
$1.4K
3.00-3.99ct
$1.6K
4.00-4.99ct
$1.9K
5.00-9.99ct
$1.9K
10.00+ct
$929
unknownct
$1.6K
Available Shapes
Round
5,584,598 listings
Avg: £1,669 GBP/ct
Oval
2,583,044 listings
Avg: £1,186 GBP/ct
Pear
1,346,968 listings
Avg: £1,097 GBP/ct
Emerald
1,241,321 listings
Avg: £1,019 GBP/ct
Radiant
1,172,839 listings
Avg: £900 GBP/ct
Marquise
831,277 listings
Avg: £850 GBP/ct
Cushion
819,541 listings
Avg: £923 GBP/ct
Princess
759,388 listings
Avg: £938 GBP/ct
Heart
397,921 listings
Avg: £925 GBP/ct
Asscher
276,231 listings
Avg: £857 GBP/ct
Other
54,122 listings
Avg: £715 GBP/ct
Trillion
13,991 listings
Avg: £604 GBP/ct
Baguette
6,806 listings
Avg: £470 GBP/ct
Sq_radiant
1,148 listings
Avg: £337 GBP/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 90,325 | £900 GBP |
| 0.30-0.49 | 713,814 | £930 GBP |
| 0.50-0.74 | 1,019,682 | £873 GBP |
| 0.75-0.99 | 666,828 | £833 GBP |
| 1.00-1.24 | 2,392,123 | £877 GBP |
| 1.25-1.49 | 693,424 | £775 GBP |
| 1.50-1.99 | 2,772,359 | £974 GBP |
| 2.00-2.49 | 2,291,509 | £1,182 GBP |
| 2.50-2.99 | 1,008,499 | £1,115 GBP |
| 3.00-3.99 | 1,807,518 | £1,246 GBP |
| 4.00-4.99 | 729,876 | £1,459 GBP |
| 5.00-9.99 | 760,766 | £1,530 GBP |
| 10.00+ | 123,841 | £731 GBP |
| unknown | 18,631 | £1,251 GBP |