Sapphire Size to Carat Chart
Here are the approximate carat weight ranges for sapphires in specific sizes and shapes. Oval | Round | Square
Please note that weight ranges are approximations and may vary depending on the cut, depth, and proportions of the stone. The weights are not exact because not all gemstones are cut the same way by gemstone manufacturers. Additionally, carat weight is not the only factor to consider when purchasing a sapphire, as factors such as cut, color and clarity also play a significant role in determining the value of the stone.
Oval Sapphire Size To Weight Chart |
|
|---|---|
| Length x Width (mm) | Carat Weight Range |
| 4 x 2 | 0.10-0.15 |
| 4 x 3 | 0.20-0.25 |
| 5 x 3 | 0.30-0.45 |
| 6 x 4 | 0.50-0.75 |
| 7 x 5 | 0.90-1.25 |
| 8 x 6 | 1.50-2.00 |
| 9 x 7 | 2.20-2.80 |
| 10 x 8 | 3.20-3.90 |
| 11 x 9 | 4.30-5.50 |
Round Sapphire Size To Weight Chart |
|
|---|---|
| Diameter (mm) | Carat Weight |
| 2.0 | 0.04 to 0.05 |
| 2.5 | 0.08 to 0.10 |
| 3.0 | 0.13 to 0.16 |
| 3.5 | 0.20 to 0.25 |
| 4.0 | 0.30 to 0.38 |
| 4.5 | 0.40 to 0.55 |
| 5.0 | 0.60 to 0.70 |
| 5.5 | 0.8 to 0.95 |
| 6.0 | 1.0 to 1.2 |
| 6.5 | 1.4 to 1.5 |
| 7.0 | 1.8 to 1.9 |
| 7.5 | 2.1 to 2.3 |
| 8.0 | 2.2 to 2.6 |
| 8.5 | 2.7 to 3.5 |
| 9.0 | 3.7 to 4.5 |
Square Sapphire Size To Weight Chart |
|
|---|---|
| Side Length (mm) | Carat Weight |
| 1.5 | 0.03 to 0.05 |
| 2.0 | 0.06 to 0.08 |
| 2.5 | 0.12 to 0.14 |
| 3.0 | 0.20 to 0.24 |
| 3.5 | 0.30 to 0.39 |
| 4.0 | 0.45 to 0.54 |
| 4.5 | 0.63 to 0.70 |
| 5.0 | 0.80 to 0.92 |
| 5.5 | 1.0 to 1.2 |
| 6.0 | 1.2 to 1.4 |
| 6.5 | 1.6 to 1.8 |
| 7.0 | 1.8 to 1.9 |
| 7.5 | 2.3 to 2.7 |
| 8.0 | 3.0 to 3.3 |
