The size, number, position, nature, and color or relief of characteristics determine the clarity grade. Very few diamonds are flawless, that is, show no inclusions or blemishes when examined by a skilled grader under 10X magnification. If other factors are equal, flawless stones are most valuable. A group of tiny white inclusions which result in a milky or cloudy appearance. Grading color in the normal range involves deciding how closely a stone's bodycolor approaches colorlessness.
Most diamonds have at least a trace of yellow or brown bodycolor.
With the exception of some natural fancy colors, such as blue, pink, purple, or red, the colorless grade is the most valuable. The upper part of the diamond above the girdle. Consists of a large flat area on top called a table, and several facets below it. The smallest facet at the bottom of the diamond. Cut can also mean shape, as in emerald cut or marquise cut.