Carats indicates weight; mm indicates length and width -- the two are not necessarily compatible.
However, if your diamond is a round brilliant cut diamond and its diameter at the girdle is 10mm, the diamond may be about four carats. If the cut is another shape, it may have a different carat weight.
This diamond could weigh about six carats if its measurement is 10mm x 10mm.
About 141.7 carats per ounce.
2267.96185 carats.
A diamond that measures 12mm by 10mm in an oval cut can weigh in the neighborhood of five carats.
1 ounce is 138.29 carats.
There are roughly 2,267 carats in a pound.
30,000 carats.
Five carats.
7 CARATS
5678 carats in 5 millimeters
One ounce = about 141.7 carats.
There are 45.52 carats on the hope diamond