Lab Grown Diamond Market
As of July 2026, there are 17,627,789 lab grown diamond listings available across retailers worldwide. The average price per carat is £1,079 GBP. Prices have decreased by 5.0% 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
6.5M
Oval
2.9M
Pear
1.8M
Emerald
1.3M
Cushion
1.2M
Radiant
1.1M
Marquise
933K
Princess
850K
Heart
516K
Asscher
378K
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
$996
1.50-1.99ct
$1.3K
2.00-2.49ct
$1.5K
2.50-2.99ct
$1.5K
3.00-3.99ct
$1.7K
4.00-4.99ct
$1.8K
5.00-9.99ct
$2.0K
10.00+ct
$1.4K
unknownct
$1.5K
Available Shapes
Round
6,520,803 listings
Avg: £1,658 GBP/ct
Oval
2,865,311 listings
Avg: £1,274 GBP/ct
Pear
1,824,830 listings
Avg: £1,117 GBP/ct
Emerald
1,324,425 listings
Avg: £1,055 GBP/ct
Cushion
1,166,411 listings
Avg: £1,007 GBP/ct
Radiant
1,138,953 listings
Avg: £934 GBP/ct
Marquise
932,866 listings
Avg: £916 GBP/ct
Princess
849,597 listings
Avg: £1,017 GBP/ct
Heart
515,680 listings
Avg: £1,005 GBP/ct
Asscher
377,753 listings
Avg: £1,033 GBP/ct
Other
83,907 listings
Avg: £665 GBP/ct
Trillion
17,506 listings
Avg: £566 GBP/ct
Baguette
8,086 listings
Avg: £445 GBP/ct
Sq_radiant
1,661 listings
Avg: £367 GBP/ct
By Carat Weight
| Carat Range | Listings | Avg Price/ct |
|---|---|---|
| 0.20-0.29 | 81,629 | £891 GBP |
| 0.30-0.49 | 676,588 | £945 GBP |
| 0.50-0.74 | 1,237,092 | £896 GBP |
| 0.75-0.99 | 739,094 | £894 GBP |
| 1.00-1.24 | 3,156,846 | £865 GBP |
| 1.25-1.49 | 764,157 | £784 GBP |
| 1.50-1.99 | 3,271,868 | £1,037 GBP |
| 2.00-2.49 | 2,518,747 | £1,190 GBP |
| 2.50-2.99 | 1,236,751 | £1,149 GBP |
| 3.00-3.99 | 1,885,511 | £1,342 GBP |
| 4.00-4.99 | 907,118 | £1,426 GBP |
| 5.00-9.99 | 973,064 | £1,561 GBP |
| 10.00+ | 161,821 | £1,137 GBP |
| unknown | 17,503 | £1,159 GBP |