Round Diamond Size Chart
| Round MM Size | Round Carat Weight |
|---|---|
| 4 mm | 0.25 ct |
| 5.0 mm | 0.50 ct |
| 5.75 mm | 0.75 ct |
| 6.5 mm | 1.00 ct |
| 6.8 mm | 1.25 ct |
| 7.3 mm | 1.50 ct |
| 7.75 mm | 1.75 ct |
| 8 mm | 2.00 ct |
| 8.7 mm | 2.50 ct |
| 9.1 mm | 3.00 ct |
| 9.75 mm | 3.50 ct |
| 10.25 mm | 4.00 ct |
| 10.75 mm | 4.50 ct |
| 11 mm | 5.00 ct |
| Round MM Size | Round Carat Weight |
|---|---|
| 0.8 mm | 0.0025 ct |
| 1 mm | 0.005 ct |
| 1.1 mm | 0.0067 ct |
| 1.2 mm | 0.009 ct |
| 1.25 mm | 0.01 ct |
| 1.3 mm | 0.01 ct |
| 1.5 mm | 0.015 ct |
| 1.75 mm | 0.02 ct |
| 1.8 mm | 0.025 ct |
| 2 mm | 0.03 ct |
| 2.2 mm | 0.04 ct |
| 2.5 mm | 0.06 ct |
| 2.75 mm | 0.08 ct |
| 3 mm | 0.10 ct |
| 3.25 mm | 0.14 ct |
| 3.5 mm | 0.17 ct |
| 3.75 mm | 0.21 ct |
| 4 mm | 0.25 ct |
| 4.25 mm | 0.28 ct |
| 4.5 mm | 0.36 ct |
| 4.75 mm | 0.44 ct |
| 5.0 mm | 0.50 ct |
| 5.25 mm | 0.56 ct |
| 5.5 mm | 0.66 ct |
| 5.75 mm | 0.75 ct |
| 6 mm | 0.84 ct |
| 6.25 mm | 0.93 ct |
| 6.5 mm | 1.00 ct |
| 6.8 mm | 1.25 ct |
| Round MM Size | Round Carat Weight |
|---|---|
| 7 mm | 1.30 ct |
| 7.3 mm | 1.50 ct |
| 7.5 mm | 1.67 ct |
| 7.75 mm | 1.75 ct |
| 8 mm | 2.00 ct |
| 8.25 mm | 2.11 ct |
| 8.5 mm | 2.43 ct |
| 8.7 mm | 2.50 ct |
| 9 mm | 2.75 ct |
| 9.1 mm | 3.00 ct |
| 9.5 mm | 3.35 ct |
| 9.75 mm | 3.50 ct |
| 10 mm | 3.87 ct |
| 10.25 mm | 4.00 ct |
| 10.5 mm | 4.41 ct |
| 10.75 mm | 4.50 ct |
| 11 mm | 5.00 ct |
| 11.25 mm | 5.49 ct |
| 11.5 mm | 5.85 ct |
| 12 mm | 6.84 ct |
| 12.25 mm | 7.26 ct |
| 12.5 mm | 7.36 ct |
| 12.75 mm | 7.52 ct |
| 13 mm | 8.51 ct. |
| 13.5 mm | 9.53 ct |
| 14 mm | 10.49 ct |
| 15 mm | 12.89 ct |
| 16 mm | 16.06 ct |
