The Four C's
Understanding the 4 C’s of Diamond Jewelry
Carat weight of the stones set in a jewelry is estimated as an approximate weight according to formulas taking into consideration the measurements of the stones. Only when a diamond certificate is available, an exact weight will be mentioned in the jewelry certificate.
In principle for jewelry, color will not be graded in detailed grades as for loose diamonds (Ex. D) but in ranges of 1 up to 3 color grades ( Ex. range D, range D-E, range D-E-F). Exact color (Ex. D) will only be given if the stone has a diamond certificate.
In principle for jewelry, clarity will be graded not in detailed grades as for loose diamonds but in broader grades (Ex. VVS, VS, SI, and I) or even in ranges of these clarities (Ex. VVS-VS, VS-SI). Exact clarity (Ex. IF, VVS1, VS) will only be given if the stone has a diamond certificate.
Cut will be described with one overall grade including proportions and finish. (Ex. excellent, very good, good, poor, fair).