Finish refers to which aspect of a diamond?

• A. The weight of the stone
• B. The color grade
• C. The quality of the polish and precision of the cut
• D. The fluorescence

Answer: (C)

Finish is about how the diamond’s surface and facets are produced and aligned. It covers two closely related ideas: the polish quality, meaning how smooth and free of scratches the facets are, and the precision of the cut, meaning how accurately the facets meet and align (symmetry). A high-quality finish lets light reflect cleanly from facet to facet, maximizing brilliance, fire, and scintillation. This is different from weight (carat), which measures heft, or color grade, which assesses color, or fluorescence, which is a light-emitting reaction under UV light. So finish specifically describes the surface quality and facet accuracy that together influence a diamond’s sparkle.