Every diamond in the Brilliant Diamonds inventory is accompanied by a certificate from an unbiased, third party diamond laboratory. A certificate contains grades of a diamond's various characteristics, such as, among others, its cut, color, and clarity. Thus, you can be confident while shopping at Brilliant Diamonds that, not only has every diamond you see here been hand-selected by our expert gemologists, but that it has also been graded by a neutral, third party source.