How are diamonds weighed?
Exact measurement of carat weight is important because slight difference in carat weight can have a large impact on price. GCAL weighs diamonds on precise electronic balances that are calibrated and verified daily according to ISO requirements. Carat weight is measured to a thousandth of a carat and then is rounded to a hundredth of a carat. If the thousandth of a carat is 9 then the weight is rounded up, otherwise, the weight is rounded down. For example: If a diamond weighs 0.708 carats, than GCAL rounds down to 0.70 carats. If a diamond weighs 0.709 carats, than it is rounded up to 0.71 carats.
