Symmetry has more to do with how much life the diamond has than anything else. The symmetry is graded on the same scale as cut and polish. It’s either going to be Excellent, Very Good, Good, Fair or Poor.
At NADB we have chosen only to broker diamonds with Very Good to Excellent symmetry. The symmetry grade is based on how well the facets or flat areas of the diamond are cut and how well they line up together. Also, how well the facets of the top of the diamond line up with the facets on the bottom of the diamond. If all the facets come to a perfect point and all the facets line up precisely then the diamond’s symmetry is going to be excellent. If you have any other questions about symmetry please give us a call.