Point

Term meaning one-hundredth of a carat approximately the size of one-half a grain of sand. 100 points equates to 1 carat. 

Pinpoint

An inclusion within a diamond. A gathering of pinpoints is called a “cluster” or “cloud.” A cloud or cluster can appear as a hazy area in the diamond, a pinpoint appears as a dot.

Pavilion

Bottom portion of the stone, under the girdle, measuring to the culet. It is the area below the girdle consisting of 23 facets in the round-brilliant-cut diamond.