Diamond Table Size length of the table of a diamond located at the top in the crown of a round brilliant diamond.
Girdle Thickness is the thickness of the girdle, located at the side of the diamond where the upper girdle facets and lower girdle facets meet.
Crown Height is the measurement from the girdle to the table of the diamond.
Pavilion Depth is the measurement from the girdle to the culet (bottom tip of the diamond) of the diamond.
Total Depth is Crown Height plus the Pavilion Depth
Crown Angle is the angle of the crown relative to the girdle.
Pavilion Angle is the angle of the pavilion relative to the girdle.
Culet bottom tip of a diamond.
Star Length the length of the star facet located at the crown.
Half Facet Length length of the pavilion facet.