Cut refers to the overall description of the proportions on the one hand and the finish of the diamond on the other hand.

The proportions are determinative for the brilliancy and the fire of the diamond, while the symmetry represents the extent to the deviations of the facets and other characteristics of the cut. The quality of the polish is important for the unique shine of the diamond.

The description of the cut on a certificate is split into a separate description of the proportions, the symmetry and the polish with the grades “excellent, very good, good, medium or poor”.