Prior to purchasing a diamond gemstone for mounting in a ring setting, you should expect to review a copy of its certificate as proof that it has undergone an unbiased, professional examination.
What is a Certificate?
A diamond certificate is a report about a specific stone created by a team of gemologists from a reputable gemological institute such as GIA or EGL. The diamond is evaluated, measured, and examined using a 10X jeweler's loupe, 30X microscope, other industry tools and trained eyes. A completed certificate includes an analysis of the diamond's cut, color, clarity, carat weight, dimensions, symmetry, and other characteristics necessary to accurately grade the diamond.