| Carat Weight | Variance Range |
|---|---|
| 1/20 carat | .04 - .06 |
| 1/15 carat | .065 - .08 |
| 1/10 carat | .085 - .11 |
| 1/8 carat | .115 - .14 |
| 1/6 carat | .145 - .17 |
| 1/5 carat | .18 - .22 |
| 1/4 carat | .23 - .28 |
| 1/3 carat | .29 - .36 |
| 3/8 carat | .37 - .44 |
| 1/2 carat | .45 - .57 |
| 5/8 carat | ..58 - .68 |
| 3/4 carat | .69 - .79 |
| 7/8 carat | .80 -.94 |
| 1 carat | .95 - 1.11 |
| 1 1/5 carats | 1.18 - 1.22 |
| 1 1/4 carats | 1.23 - 1.28 |
| 1 1/3 carats | 1.29 - 1.36 |
| 1 3/8 carat | 1.37 - 1.44 |
| 1 1/2 carats | 1.45 - 1.57 |
| 1 5/8 carats | 1.58 - 1.68 |
| 1 3/4 carats | 1.69 - 1.79 |
| 1 7/8 carats | 1.80 - 1.94 |
| 2 carats | 1.95 - 2.11 |
| 3 carats | 2.95 - 3.11 |
| 4 carats | 3.95 - 4.11 |
| 5 carats | 4.95 - 5.11 |
| 6 carats | 5.95 - 6.11 |
| 7 carats | 6.95 - 7.11 |
