Most diamond experts agree that cut is the most important of the 4Cs. Cut above all else makes the diamond brilliant and sparkle.
Diamonds after all are essentially a container of light. The better the proportions, polish, and symmetry of the diamond’s cut, the more brilliant the diamond will be.
Cut grading ranges from Excellent (Ideal) to Poor. There are many aspects of cut to consider when the stone is graded. The angles and proportions of the stone are key, and the table/depth proportions are often key indicators of the stones overall balance.
Cut grading takes experience and a Graduate Gemologist is an expert professional who is best equipped to guide.
To Learn more about Diamond Cut, view GIA’s 4C Guide here.