As the carat weight (abbreviated ct.) increases, the width and height of the diamond also increase. Depending on the cut quality, however, the dimensions may deviate from the table below. For example, a diamond cut too narrowly in brilliant cut may have a width of 4.8 mm instead of 5 mm. In a gemological certificate, width and height (W × H) are specified in mm. You will receive this expertise from BREEDIA for diamonds from 0.3 ct.
| Carat (ct.) | Width | Height |
|---|---|---|
| 0.005 ct. | 1 mm | 0.7 mm |
| 0.01 ct. | 1.3 mm | 0.8 mm |
| 0.02 ct. | 1.7 mm | 1.0 mm |
| 0.03 ct. | 2 mm | 1.2 mm |
| 0.04 ct. | 2.2 mm | 1.3 mm |
| 0.05 ct. | 2.4 mm | 1.5 mm |
| 0.08 ct. | 2.7 mm | 1.7 mm |
| 0.1 ct. | 3 mm | 1.9 mm |
| 0.15 ct. | 3.4 mm | 2.1 mm |
| 0.2 ct. | 3.8 mm | 2.3 mm |
| 0.25 ct. | 4.1 mm | 2.5 mm |
| 0.30 ct. | 4.3 mm | 2.8 mm |
| 0.40 ct. | 4.8 mm | 3.0 mm |
| 0.50 ct. | 5 mm | 3.3 mm |
| 0.60 ct. | 5.5 mm | 3.4 mm |
| 0.70 ct. | 5.7 mm | 3.6 mm |
| 0.75 ct. | 5.9 mm | 3.7 mm |
| 0.80 ct. | 6 mm | 3.8 mm |
| 0.90 ct. | 6.3 mm | 3.9 mm |
| 1.00 ct. | 6.5 mm | 4.0 mm |
Cut type Brilliant with 57 facets (round cut) – Values with cut grade symmetry excellent
PDF Download:
» Table with actual size comparison of brilliants
» Table with mm width and height specifications
Back to the Diamond Knowledge Area
