Diamond Carat Weights and Tolerance Range
| Diamond CTW | Carat Weight Variance Range |
| 0.001 - 0.049 | 0.001 - 0.049 |
| 0.05 | 0.048 - 0.052 |
| 0.07 | 0.068 - 0.072 |
| 0.10 | 0.098 - 0.102 |
| 0.13 | 0.128 - 0.132 |
| 0.15 | 0.148 - 0.152 |
| 0.20 | 0.198 - 0.202 |
| 0.25 | 0.248 - 0.252 |
| 0.33 | 0.328 - 0.332 |
| 0.38 | 0.378 - 0.382 |
| 0.50 | 0.498 - 0.502 |
| 0.58 | 0.578 - 0.582 |
| 0.70 | 0.698 - 0.702 |
| 0.80 | 0.798 - 0.802 |
| 1.00 | 0.998 - 1.002 |
| 1.13 | 1.128 - 1.132 |
| 1.15 | 1.148 - 1.152 |
| 1.20 | 1.198 - 1.202 |
| 1.25 | 1.248 - 1.252 |
| 1.33 | 1.328 - 1.332 |
| 1.38 | 1.378 - 1.382 |
| 1.5 | 1.498 - 1.502 |
| 1.58 | 1.578 - 1.582 |
| 1.7 | 1.698 - 1.702 |
| 1.83 | 1.828 - 1.832 |
| 2 | 1.998 - 2.002 |
| 2.13 | 2.128 - 2.132 |
| 2.15 | 2.148 - 2.152 |
| 2.2 | 2.198 - 2.202 |
| 2.25 | 2.248 - 2.252 |
| 2.33 | 2.328 - 2.332 |
| 2.38 | 2.378 - 2.382 |
| 2.5 | 2.498 - 2.502 |
| 2.58 | 2.578 - 2.582 |
| 2.7 | 2.698 - 2.702 |
| 2.9 | 2.898 - 2.902 |
| 3 | 2.998 - 3.002 |
| 3.13 | 3.128 - 3.132 |
| 3.15 | 3.148 - 3.152 |
| 3.2 | 3.198 - 3.202 |
| 3.25 | 3.248 - 3.252 |
| 3.33 | 3.328 - 3.332 |
| 3.38 | 3.378 - 3.382 |
| 3.5 | 3.498 - 3.502 |
| 3.58 | 3.578 - 3.582 |
| 3.7 | 3.698 - 3.702 |
| 3.9 | 3.898 - 3.902 |
| 4 | 3.998 - 4.002 |
| 4.13 | 4.128 - 4.132 |
| 4.15 | 4.148 - 4.152 |
| 4.2 | 4.198 - 4.202 |
| 4.25 | 4.248 - 4.252 |
| 4.33 | 4.328 - 4.332 |
| 4.38 | 4.378 - 4.382 |
| 4.5 | 4.498 - 4.502 |
| 4.58 | 4.578 - 4.582 |
| 4.7 | 4.698 - 4.702 |
| 4.9 | 4.898 - 4.902 |
| 5 | 4.998 - 5.002 |
| 5.13 | 5.128 - 5.132 |
| 5.15 | 5.148 - 5.152 |
| 5.2 | 5.198 - 5.202 |
| 5.25 | 5.248 - 5.252 |
| 5.33 | 5.328 - 5.332 |
| 5.38 | 5.378 - 5.382 |
| 5.5 | 5.498 - 5.502 |
| 5.58 | 5.578 - 5.582 |
| 5.7 | 5.698 - 5.702 |
| 5.9 | 5.898 - 5.902 |
| 6 | 5.998 - 6.002 |
| 6.13 | 6.128 - 6.132 |
| 6.15 | 6.148 - 6.152 |
| 6.2 | 6.198 - 6.202 |
| 6.25 | 6.248 - 6.252 |
| 6.33 | 6.328 - 6.332 |
| 6.38 | 6.378 - 6.382 |
| 6.5 | 6.498 - 6.502 |
| 6.58 | 6.578 - 6.582 |
| 6.7 | 6.698 - 6.702 |
| 6.9 | 6.898 - 6.902 |
| 7 | 6.998 - 7.002 |