Cushion Cut conversions
| Cushion Cut (Modern + Brilliant) MM Size | Cushion Cut (Modern + Brilliant) Approximate Carat Weight |
|---|---|
| 4x4mm | 0.35ctw |
| 4.5x4.5mm | 0.50ctw |
| 5x5mm | 0.60ctw |
| 5.5x5.5mm | 0.75ctw |
| 6x6mm | 1.00ctw |
| 6.5x6.5mm | 1.30ctw |
| 7x7mm | 1.60ctw |
| 7.5x7.5mm | 2.00ctw |
| 8x8mm | 2.40ctw |
| 8.5x8.5mm | 2.75ctw |
| 9x9mm | 3.25ctw |
| 9.5x9.5mm | 4.25ctw |
| 10x10mm | 5.00ctw |
| Rose Cut Cushion MM Size | Rose Cut Cushion Approximate Carat Weight |
|---|---|
| 6.5mm | 0.60ctw |
| 7.0mm | 0.85ctw |
| 7.5mm | 1.10ctw |
| 8.0mm | 1.40ctw |
| 8.5mm | 1.80ctw |
| 9.0mm | 2.00ctw |
| Elongated Modern Cushion Cut MM Size | Elongated Modern Cushion Cut Approximate Carat Weight |
|---|---|
| 8x6.5mm | 1.75ctw |
| 8.5x7mm | 2.00ctw |
| 9x7.5mm | 2.50ctw |
| 9.5x8mm | 3.00ctw | 10x8.5mm | 3.60ctw |
| 10.5x9mm | 4.00ctw | 11x9.5mm | 5.00ctw |
| 11.5x10mm | 5.75ctw |
| Elongated Old Mine Cushion Cut MM Size | Elongated Old Mine Cushion Cut Approximate Carat Weight |
|---|---|
| 8x6.5mm | 2.10ctw |
| 8.5x7mm | 2.45ctw |
| 9x7.5mm | 3.00ctw |
| 9.5x8mm | 3.50ctw |
| 10x8.5mm | 4.00ctw |
| 10.5x9mm | 4.50ctw |
| 11x9.5mm | 5.75ctw |
| 11.5x10mm | 6.50ctw |
*Please note: The carat conversion for elongated cushions is an educated guess. The carat weight of a cushion cut diamond is heavily determined by the depth measurement, which is not included in the above dimensions. Length to width measurements also varies a great deal in the cushion cut shape. The information provided above is approximate and intended to give a general idea of carat conversion.