Carat Weight tolerance
My Trio Rings advertises the carat weight of our jewelry indicating the Total Diamond Weight, adding together the individual carat weights of the diamonds in a ring or set of rings or jewelry and denoting this with Carat Total Weight (Ctw., Cttw., Ct. Tw.) As per FTC Guidelines, below is a table of the precise carat weights for each advertised fractional carat weight.
| 1 Carat & Under | 1 Carat + | 2 Carat + | 3 Carat + | 4 Carat + | 5 Carat + | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/25 | 0.01-0.03 | 1 1/10 | 1.06-1.11 | 2 1/10 | 2.06-2.11 | 3 1/10 | 3.06-3.11 | 4 1/10 | 4.06-4.11 | 5 1/10 | 5.06-5.11 |
| 1/20 | 0.04-0.05 | 1 1/8 | 1.12-1.13 | 2 1/8 | 2.12-2.13 | 3 1/8 | 3.12-3.13 | 4 1/8 | 4.12-4.13 | 5 1/8 | 5.12-5.13 |
| 1/15 | 0.06-0.07 | 1 1/7 | 1.14-1.15 | 2 1/7 | 2.14-2.15 | 3 1/7 | 3.14-3.15 | 4 1/7 | 4.14-4.15 | 5 1/7 | 5.14-5.15 |
| 1/10 | 0.08-0.11 | 1 1/6 | 1.16-1.17 | 2 1/6 | 2.16-2.17 | 3 1/6 | 3.16-3.17 | 4 1/6 | 4.16-4.17 | 5 1/6 | 5.16-5.17 |
| 1/8 | 0.12-0.13 | 1 1/5 | 1.18-1.22 | 2 1/5 | 2.18-2.22 | 3 1/5 | 3.18-3.22 | 4 1/5 | 4.18-4.22 | 5 1/5 | 5.18-5.22 |
| 1/7 | 0.14-0.15 | 1 1/4 | 1.23-1.28 | 2 1/4 | 2.23-2.28 | 3 1/4 | 3.23-3.28 | 4 1/4 | 4.23-4.28 | 5 1/4 | 5.23-5.28 |
| 1/6 | 0.16-0.17 | 1 1/3 | 1.29-1.36 | 2 1/3 | 2.29-2.36 | 3 1/3 | 3.29-3.36 | 4 1/3 | 4.29-4.36 | 5 1/3 | 5.29-5.36 |
| 1/5 | 0.18-0.22 | 1 3/8 | 1.37-1.44 | 2 3/8 | 2.37-2.44 | 3 3/8 | 3.37-3.44 | 4 3/8 | 4.37-4.44 | 5 3/8 | 5.37-5.44 |
| 1/4 | 0.23-0.28 | 1 1/2 | 1.45-1.58 | 2 1/2 | 2.45-2.58 | 3 1/2 | 3.45-3.58 | 4 1/2 | 4.45-4.58 | 5 1/2 | 5.45-5.58 |
| 1/3 | 0.29-0.36 | 1 5/8 | 1.59-1.63 | 2 5/8 | 2.59-2.63 | 3 5/8 | 3.59-3.63 | 4 5/8 | 4.59-4.63 | 5 5/8 | 5.59-5.63 |
| 3/8 | 0.37-0.44 | 1 2/3 | 1.64-1.68 | 2 2/3 | 2.64-2.68 | 3 2/3 | 3.64-3.68 | 4 2/3 | 4.64-4.68 | 5 2/3 | 5.64-5.68 |
| 1/2 | 0.45-0.58 | 1 3/4 | 1.69-1.82 | 2 3/4 | 2.69-2.82 | 3 3/4 | 3.69-3.82 | 4 3/4 | 4.69-4.82 | 5 3/4 | 5.69-5.82 |
| 5/8 | 0.59-0.63 | 1 7/8 | 1.83-1.94 | 2 7/8 | 2.83-2.94 | 3 7/8 | 3.83-3.94 | 4 7/8 | 4.83-4.94 | 5 7/8 | 5.83-5.94 |
| 2/3 | 0.64-0.68 | 2 | 1.95-2.05 | 3 | 2.95-3.05 | 4 | 3.95-4.05 | 4 | 4.95-5.05 | 6 | 5.95-5.05 |
| 3/4 | 0.69-0.82 | ||||||||||
| 7/8 | 0.83-0.94 | ||||||||||
| 1 | 0.95-1.05 | ||||||||||
