Describes the shape and Cutting Style.

Diamond dimensions listed as “minimum diameter – maximum diameter x depth” for round diamonds and “length x width x depth” for fancy-shaped diamonds.

Weight given in carats, recorded to the nearest hundredth of a carat. One carat is equal to 1/5 of a gram.

Includes a color description describing the hue as well as a fancy color grade describing the combined effect of tone and saturation. More generalized description is used for laboratory-grown diamonds.

The relative absence of inclusions and blemishes.

Table-to-culet depth, expressed as a percentage of average girdle diameter for round shapes or width for fancy shapes.

Table size expressed as a percentage of a round brilliant’s average girdle diameter for round shapes or width for fancy shapes.

Thickness of the intersection of the crown and pavilion which defines the perimeter of the diamond.

Size of the facet at the tip of a gemstone relative to the average diameter for round shapes or width for fancy shapes.

Smoothness of the diamond’s surface, assessed on a scale ranging from excellent to poor.

Exactness of the diamond’s outline, and the shape, placement, and alignment of its facets, assessed on a scale ranging from excellent to poor.

Strength and color of the diamond when viewed under long-wave ultraviolet light. A fluorescence description of “none” represents a range of fluorescence from indiscernible to very faint. Used for identification purposes.

List of the most significant clarity characteristics present in the diamond that justifies the clarity grade; a maximum of four characteristics are listed.