pavilion

…girdle and those of the pavilion (below the girdle) an angle of 41°, the maximum amount of light entering the crown will be reflected back through the crown by the pavilion, and the diamond will possess its maximum brilliance and a high degree of fire.

…stone’s upper portion, from the pavilion, the stone’s base. The large facet in the crown parallel to the girdle is the table; the very small one in the pavilion also parallel to the girdle is the culet. Certain stones, such as mogul cut diamonds (egg-shaped jewels faceted without regard for…