Lab Grown Cushion Diamond Prices in United Kingdom
Last updated: September 2026
By Carat Weight
Price Distribution
LowHigh
| Colour | FL | IF | VVS1 | VVS2 | VS1 | VS2 | SI1 | SI2 | I |
|---|---|---|---|---|---|---|---|---|---|
| D-E | $2,366 | $2,310 | $827 | $751 | $552 | $546 | $448 | $655 | $2,388 |
| F-G | $2,126 | $1,314 | $728 | $542 | $485 | $501 | $480 | $943 | $1,434 |
| H-I | - | $2,072 | $1,246 | $704 | $770 | $925 | $1,318 | $2,245 | $2,679 |
| J-K | - | $1,340 | $1,957 | $1,001 | $1,047 | $1,335 | $1,425 | $3,828 | $4,059 |
| L-M | - | - | - | $692 | $560 | $776 | $1,343 | - | - |
| N+ | - | $1,600 | $789 | $671 | $618 | $752 | $882 | $853 | $325 |
By Carat Weight
0.20-0.29
447 listings
Avg: £1,065 GBP/ct
0.30-0.49
12,071 listings
Avg: £923 GBP/ct
0.50-0.74
37,334 listings
Avg: £785 GBP/ct
0.75-0.99
42,443 listings
Avg: £720 GBP/ct
1.00-1.24
161,858 listings
Avg: £756 GBP/ct
1.25-1.49
38,743 listings
Avg: £610 GBP/ct
1.50-1.99
189,514 listings
Avg: £802 GBP/ct
2.00-2.49
246,386 listings
Avg: £836 GBP/ct
2.50-2.99
157,153 listings
Avg: £877 GBP/ct
3.00-3.99
245,885 listings
Avg: £788 GBP/ct
4.00-4.99
108,910 listings
Avg: £889 GBP/ct
5.00-9.99
102,077 listings
Avg: £1,072 GBP/ct
10.00+
13,608 listings
Avg: £1,241 GBP/ct
unknown
31 listings
Avg: £1,499 GBP/ct
Price by Colour & Clarity
| Colour | Clarity | Listings | Avg Price/ct |
|---|---|---|---|
| D-E | FL | 31,302 | £1,755 GBP |
| D-E | I | 34 | £1,771 GBP |
| D-E | IF | 36,737 | £1,714 GBP |
| D-E | SI1 | 6,257 | £332 GBP |
| D-E | SI2 | 668 | £486 GBP |
| D-E | VS1 | 299,639 | £409 GBP |
| D-E | VS2 | 58,447 | £405 GBP |
| D-E | VVS1 | 128,548 | £613 GBP |
| D-E | VVS2 | 382,248 | £557 GBP |
| F-G | FL | 231 | £1,577 GBP |
| F-G | I | 73 | £1,063 GBP |
| F-G | IF | 1,758 | £975 GBP |
| F-G | SI1 | 3,757 | £356 GBP |
| F-G | SI2 | 436 | £700 GBP |
| F-G | VS1 | 122,342 | £359 GBP |
| F-G | VS2 | 29,244 | £372 GBP |
| F-G | VVS1 | 12,339 | £540 GBP |
| F-G | VVS2 | 111,278 | £402 GBP |
| H-I | I | 46 | £1,987 GBP |
| H-I | IF | 85 | £1,536 GBP |
| H-I | SI1 | 1,167 | £977 GBP |
| H-I | SI2 | 347 | £1,665 GBP |
| H-I | VS1 | 10,121 | £571 GBP |
| H-I | VS2 | 3,786 | £686 GBP |
| H-I | VVS1 | 786 | £924 GBP |
| H-I | VVS2 | 5,130 | £522 GBP |
| J-K | I | 157 | £3,011 GBP |
| J-K | IF | 35 | £993 GBP |
| J-K | SI1 | 1,296 | £1,057 GBP |
| J-K | SI2 | 266 | £2,839 GBP |
| J-K | VS1 | 975 | £776 GBP |
| J-K | VS2 | 919 | £990 GBP |
| J-K | VVS1 | 111 | £1,451 GBP |
| J-K | VVS2 | 449 | £742 GBP |
| L-M | SI1 | 27 | £996 GBP |
| L-M | VS1 | 232 | £415 GBP |
| L-M | VS2 | 38 | £576 GBP |
| L-M | VVS2 | 108 | £513 GBP |
| N+ | I | 38 | £241 GBP |
| N+ | IF | 427 | £1,187 GBP |
| N+ | SI1 | 3,108 | £654 GBP |
| N+ | SI2 | 563 | £633 GBP |
| N+ | VS1 | 45,866 | £458 GBP |
| N+ | VS2 | 17,378 | £558 GBP |
| N+ | VVS1 | 2,508 | £585 GBP |
| N+ | VVS2 | 27,019 | £498 GBP |
| N+ | other | 8,134 | £1,339 GBP |