Diamond Weights
Fractions are commonly used in the jewelry trade to describe diamond weight. However, since each diamond is different, precise weights are calculated to 1/1000th of a carat and rounded to the nearest hundredth. Below is a list of diamond weight ranges for each corresponding diamond weight fraction.
| 1/20 carat | .04-.06 carat |
| 1/10 carat | .085-.11 carat |
| 1/8 carat | .115-.14 carat |
| 1/6 carat | .145-.17 carat |
| 1/5 carat | .18-.22 carat |
| 1/4 carat | .23-.28 carat |
| 1/3 carat | .29-.36 carat |
| 3/8 carat | .37-.44 carat |
| 1/2 carat | .45-.57 carat |
| 5/8 carat | .58-.68 carat |
| 3/4 carat | .69-.79 carat |
| 7/8 carat | .80-.94 carat |
| 1 carat | .95-1.11 carat |
| 1 1/5 carats | 1.18 - 1.22 carat |
| 1 1/4 carats | 1.23-1.28 carat |
| 1 1/3 carats | 1.29-1.36 carat |
| 1 3/8 carats | 1.37-1.44 carat |
| 1 1/2 carats | 1.45-1.57 carat |
| 1 5/8 carats | 1.58-1.68 carat |
| 1 3/4 carats | 1.69-1.79 carat |
| 1 7/8 carats | 1.80-1.94 carat |
| 2 carats | 1.95-2.11 carat |
| 3 carats | 2.95-3.11 carat |
| 4 carats | 3.95-4.11 carat |
| 5 carats | 4.95-5.11 carat |
| 6 carats | 5.95-6.11 carat |
| 7 carats | 6.95-7.11 carat |
| 8 carats | 7.95-8.11 carat |
| 9 carats | 8.95-9.11 carat |
| 10 carats | 9.95-10.11 carat |