天然 Round Diamond Prices in Japan
最終更新：2026年10月
カラット重量別
価格分布
LowHigh
| カラー | FL | IF | VVS1 | VVS2 | VS1 | VS2 | SI1 | SI2 | I |
|---|---|---|---|---|---|---|---|---|---|
| D-E | $17K | $20K | $17K | $15K | $13K | $11K | $9,032 | $6,854 | $5,324 |
| F-G | $14K | $12K | $12K | $12K | $15K | $9,808 | $7,995 | $5,814 | $3,820 |
| H-I | $8,688 | $8,211 | $8,496 | $8,119 | $7,578 | $7,069 | $6,222 | $4,875 | $3,792 |
| J-K | $3,911 | $5,527 | $5,456 | $5,228 | $5,246 | $4,850 | $4,486 | $3,987 | $3,359 |
| L-M | $4,566 | $4,398 | $3,933 | $4,162 | $3,849 | $3,551 | $3,307 | $2,951 | $2,112 |
| N+ | - | $3,475 | $3,800 | $1,597 | $3,578 | $3,248 | $3,637 | $5,063 | $3,905 |
カラット重量別
0.20-0.29
266,182件の掲載
平均：￥335,115 JPY/ct
0.30-0.49
3,342,564件の掲載
平均：￥243,244 JPY/ct
0.50-0.74
2,531,426件の掲載
平均：￥270,224 JPY/ct
0.75-0.99
659,885件の掲載
平均：￥370,445 JPY/ct
1.00-1.24
1,050,652件の掲載
平均：￥546,858 JPY/ct
1.25-1.49
149,576件の掲載
平均：￥678,727 JPY/ct
1.50-1.99
562,067件の掲載
平均：￥844,623 JPY/ct
2.00-2.49
255,426件の掲載
平均：￥1,293,659 JPY/ct
2.50-2.99
80,508件の掲載
平均：￥1,607,096 JPY/ct
3.00-3.99
94,872件の掲載
平均：￥2,060,957 JPY/ct
4.00-4.99
28,504件の掲載
平均：￥2,521,831 JPY/ct
5.00-9.99
25,102件の掲載
平均：￥3,180,347 JPY/ct
10.00+
281件の掲載
平均：￥1,834,547 JPY/ct
unknown
105,421件の掲載
平均：￥796,810 JPY/ct
カラー・クラリティ別の価格
| カラー | クラリティ | 掲載数 | 平均価格/ct |
|---|---|---|---|
| D-E | FL | 28,927 | ￥2,752,716 JPY |
| D-E | I | 30,002 | ￥840,998 JPY |
| D-E | IF | 193,228 | ￥3,188,558 JPY |
| D-E | SI1 | 375,960 | ￥1,426,725 JPY |
| D-E | SI2 | 241,409 | ￥1,082,687 JPY |
| D-E | VS1 | 464,028 | ￥2,031,479 JPY |
| D-E | VS2 | 433,567 | ￥1,813,202 JPY |
| D-E | VVS1 | 547,917 | ￥2,652,329 JPY |
| D-E | VVS2 | 409,731 | ￥2,323,997 JPY |
| D-E | other | 25 | ￥429,256 JPY |
| F-G | FL | 2,973 | ￥2,160,409 JPY |
| F-G | I | 44,828 | ￥603,336 JPY |
| F-G | IF | 161,761 | ￥1,963,742 JPY |
| F-G | SI1 | 425,265 | ￥1,262,904 JPY |
| F-G | SI2 | 309,238 | ￥918,337 JPY |
| F-G | VS1 | 517,973 | ￥2,446,359 JPY |
| F-G | VS2 | 516,150 | ￥1,549,306 JPY |
| F-G | VVS1 | 444,518 | ￥1,907,178 JPY |
| F-G | VVS2 | 420,112 | ￥1,848,698 JPY |
| F-G | other | 49 | ￥562,977 JPY |
| H-I | FL | 1,284 | ￥1,372,320 JPY |
| H-I | I | 36,643 | ￥598,912 JPY |
| H-I | IF | 115,272 | ￥1,296,983 JPY |
| H-I | SI1 | 331,785 | ￥982,791 JPY |
| H-I | SI2 | 231,542 | ￥769,982 JPY |
| H-I | VS1 | 426,057 | ￥1,197,086 JPY |
| H-I | VS2 | 417,335 | ￥1,116,651 JPY |
| H-I | VVS1 | 367,714 | ￥1,341,987 JPY |
| H-I | VVS2 | 350,027 | ￥1,282,471 JPY |
| H-I | other | 17 | ￥465,034 JPY |
| J-K | FL | 401 | ￥617,827 JPY |
| J-K | I | 21,560 | ￥530,521 JPY |
| J-K | IF | 56,678 | ￥873,084 JPY |
| J-K | SI1 | 157,649 | ￥708,657 JPY |
| J-K | SI2 | 115,485 | ￥629,856 JPY |
| J-K | VS1 | 184,847 | ￥828,613 JPY |
| J-K | VS2 | 154,907 | ￥766,040 JPY |
| J-K | VVS1 | 175,827 | ￥861,840 JPY |
| J-K | VVS2 | 164,099 | ￥825,860 JPY |
| L-M | FL | 92 | ￥721,264 JPY |
| L-M | I | 5,930 | ￥333,546 JPY |
| L-M | IF | 9,625 | ￥694,689 JPY |
| L-M | SI1 | 39,522 | ￥522,339 JPY |
| L-M | SI2 | 29,128 | ￥466,087 JPY |
| L-M | VS1 | 31,789 | ￥607,996 JPY |
| L-M | VS2 | 30,905 | ￥560,991 JPY |
| L-M | VVS1 | 30,448 | ￥621,244 JPY |
| L-M | VVS2 | 29,113 | ￥657,441 JPY |
| N+ | I | 9,733 | ￥616,765 JPY |
| N+ | IF | 697 | ￥548,953 JPY |
| N+ | SI1 | 8,966 | ￥574,557 JPY |
| N+ | SI2 | 8,356 | ￥799,817 JPY |
| N+ | VS1 | 10,328 | ￥565,141 JPY |
| N+ | VS2 | 8,225 | ￥513,133 JPY |
| N+ | VVS1 | 4,485 | ￥600,265 JPY |
| N+ | VVS2 | 17,617 | ￥252,199 JPY |
| N+ | other | 717 | ￥1,324,581 JPY |