Oval Cut Diamond Size Chart
A diamond carat size chart illustrates the link between carat weight and diamond dimensions in millimeters (mm). It provides a clear view of diamond sizes and shows how cut impacts appearance and sparkle.
| Round MM Size | Round Carat Weight |
|---|---|
| 5×3 mm | 0.25 ct |
| 6×4 mm | 0.50 ct |
| 7×5 mm | 0.75 ct |
| 7.7×5.7 mm | 1.00 ct |
| 8×6 mm | 1.25 ct |
| 8.5×6.5 mm | 1.50 ct |
| 9×6.5 mm | 1.75 ct |
| 9×7 mm | 2.00 ct |
| 10×8 mm | 2.50 ct |
| 12×8 mm | 3.00 ct |
| 12×8.5 mm | 3.50 ct |
| 12.5×8.5 mm | 4.00 ct |
| 12.75×8.5 mm | 4.50 ct |
| 12×10 mm | 5.00 ct |
| Oval MM Size | Oval Carat Weight |
|---|---|
| 3.6×2.7 mm | 0.25 ct |
| 4×3 mm | 0.15 ct |
| 4.5×3.5 mm | 0.20 ct |
| 5×3 mm | 0.25 ct |
| 5.5×3.5 mm | 0.33 ct |
| 5×4 mm | 0.35 ct |
| 6×4 mm | 0.50 ct |
| 6×5 mm | 0.61 ct |
| 6.5×4.5 mm | 0.65 ct |
| 7×5 mm | 0.75 ct |
| 7.7×5.7 mm | 1.00 ct |
| 8×6 mm | 1.25 ct |
| 9×6 mm | 1.41 ct |
| 8.5×6.5 mm | 1.50 ct |
| 9×6.5 mm | 1.75 ct |
| 9×7 mm | 2.00 ct |
| Oval MM Size | Oval Carat Weight |
|---|---|
| 10×8 mm | 2.50 ct |
| 10.5×8.5 mm | 2.88 ct |
| 12×8 mm | 3.00 ct |
| 12×8.5 mm | 3.50 ct |
| 11×9 mm | 3.85 ct |
| 12.5×8.5 mm | 4.00 ct |
| 12.75×8.5 mm | 4.50 ct |
| 12×10 mm | 5.00 ct |
| 14×10 mm | 5.81 ct |
| 13×11 mm | 6.05 ct |
| 14×12 mm | 8.21 ct |
| 15×12 mm | 8.76 ct |
| 16×12 mm | 9.32 ct |
| 16×14 mm | 1.88 ct |
| 18×13 mm | 12.86 ct |
| 20×15 mm | 14.96 ct |
Diamond size charts by shape
Browse detailed diamond size guides by shape to help you choose the perfect fitfor your jewelry designs..
