Lab Grown Radiant Diamonds
As of April 2026, there are 1,135,952 lab grown radiant diamonds available. Prices range from ￥25,837 JPY/ct to ￥24,341,554 JPY/ct, with an average of ￥166,699 JPY/ct.
Last updated: April 2026
By Carat Weight
Price Distribution
LowHigh
| Color | FL | IF | VVS1 | VVS2 | VS1 | VS2 | SI1 | SI2 | I |
|---|---|---|---|---|---|---|---|---|---|
| D-E | $3,695 | $1,496 | $880 | $550 | $551 | $556 | $438 | $834 | $1,118 |
| F-G | $1,127 | $1,358 | $732 | $637 | $481 | $521 | $491 | $807 | $831 |
| H-I | - | $1,408 | $1,034 | $527 | $518 | $678 | $1,105 | $2,511 | $2,272 |
| J-K | - | $1,953 | $1,883 | $847 | $1,038 | $1,252 | $3,306 | $3,864 | $5,605 |
| L-M | - | - | $1,012 | - | - | $690 | - | - | - |
| N+ | - | $1,654 | $968 | $799 | $793 | $805 | $789 | $1,252 | $1,728 |
By Carat Weight
0.20-0.29
547 listings
Avg: ￥174,440 JPY/ct
0.30-0.49
10,506 listings
Avg: ￥197,025 JPY/ct
0.50-0.74
31,762 listings
Avg: ￥176,719 JPY/ct
0.75-0.99
51,096 listings
Avg: ￥131,398 JPY/ct
1.00-1.24
142,198 listings
Avg: ￥164,318 JPY/ct
1.25-1.49
45,206 listings
Avg: ￥117,834 JPY/ct
1.50-1.99
184,919 listings
Avg: ￥146,602 JPY/ct
2.00-2.49
128,863 listings
Avg: ￥164,276 JPY/ct
2.50-2.99
88,609 listings
Avg: ￥192,792 JPY/ct
3.00-3.99
233,256 listings
Avg: ￥133,022 JPY/ct
4.00-4.99
147,310 listings
Avg: ￥168,451 JPY/ct
5.00-9.99
57,837 listings
Avg: ￥306,945 JPY/ct
10.00+
13,788 listings
Avg: ￥85,083 JPY/ct
unknown
55 listings
Avg: ￥120,542 JPY/ct
Price by Color & Clarity
| Color | Clarity | Listings | Avg Price/ct |
|---|---|---|---|
| D-E | FL | 3,370 | ￥551,543 JPY |
| D-E | I | 16 | ￥166,866 JPY |
| D-E | IF | 39,423 | ￥223,325 JPY |
| D-E | SI1 | 7,444 | ￥65,366 JPY |
| D-E | SI2 | 353 | ￥124,479 JPY |
| D-E | VS1 | 274,279 | ￥82,288 JPY |
| D-E | VS2 | 56,589 | ￥82,981 JPY |
| D-E | VVS1 | 89,627 | ￥131,280 JPY |
| D-E | VVS2 | 326,504 | ￥82,041 JPY |
| F-G | FL | 10 | ￥168,281 JPY |
| F-G | I | 29 | ￥124,073 JPY |
| F-G | IF | 2,093 | ￥202,653 JPY |
| F-G | SI1 | 5,747 | ￥73,293 JPY |
| F-G | SI2 | 386 | ￥120,459 JPY |
| F-G | VS1 | 113,837 | ￥71,745 JPY |
| F-G | VS2 | 34,751 | ￥77,770 JPY |
| F-G | VVS1 | 9,473 | ￥109,322 JPY |
| F-G | VVS2 | 99,292 | ￥95,103 JPY |
| F-G | other | 10 | ￥49,507 JPY |
| H-I | I | 12 | ￥339,104 JPY |
| H-I | IF | 183 | ￥210,129 JPY |
| H-I | SI1 | 1,005 | ￥164,948 JPY |
| H-I | SI2 | 207 | ￥374,815 JPY |
| H-I | VS1 | 11,545 | ￥77,370 JPY |
| H-I | VS2 | 4,106 | ￥101,120 JPY |
| H-I | VVS1 | 697 | ￥154,364 JPY |
| H-I | VVS2 | 6,398 | ￥78,583 JPY |
| J-K | I | 51 | ￥836,565 JPY |
| J-K | IF | 35 | ￥291,549 JPY |
| J-K | SI1 | 628 | ￥493,501 JPY |
| J-K | SI2 | 219 | ￥576,709 JPY |
| J-K | VS1 | 431 | ￥154,986 JPY |
| J-K | VS2 | 434 | ￥186,882 JPY |
| J-K | VVS1 | 61 | ￥281,053 JPY |
| J-K | VVS2 | 264 | ￥126,446 JPY |
| L-M | VS2 | 15 | ￥102,964 JPY |
| L-M | VVS1 | 14 | ￥151,045 JPY |
| N+ | I | 11 | ￥257,852 JPY |
| N+ | IF | 319 | ￥246,865 JPY |
| N+ | SI1 | 1,727 | ￥117,816 JPY |
| N+ | SI2 | 279 | ￥186,792 JPY |
| N+ | VS1 | 21,912 | ￥118,295 JPY |
| N+ | VS2 | 8,611 | ￥120,078 JPY |
| N+ | VVS1 | 932 | ￥144,404 JPY |
| N+ | VVS2 | 12,623 | ￥119,274 JPY |