This is the new addition to the 4 C’s, or the ‘5th C’ as it has become known.
A diamond certificate is similar to a ‘birth certificate’ for your diamond. It provides an unbiased outline of the diamond’s cut, colour, clarity and carat, along with detailed measurements.
Some laboratories are more reputable than others, with parameters used in grading varying significantly.
The GIA (Gemmological Institute of America) are the inventors of both the 4C’s and the diamond grading system. Accordingly, the GIA tends to be the most widely accepted authority for certification.