cut for gemstones 
Cutting a gemstone consists of angling the facets so that the stone’s brilliance is intensified.
Unfaceted cut suitable for opaque stones; it has one flat side and one or two convex sides.
The simplest kind of table cut; the rectangular girdle with sometimes rounded corners is surrounded on each side by a row of facets.
Cut with a flat base and a dome made up of triangular facets; the total number of facets is a multiple of three.
Cut where the square or rectangular girdle is surrounded by parallel rows of rectangular facets; there are more facets on the pavilion side than on the crown side.
Classic emerald step cut that has a rectangular table with beveled corners and a girdle of the same shape with occasionally beveled corners.
Step cut with triangular facets.
Cut often used for smaller diamonds; it has eight crown facets, eight pavilion facets, an octagonal table and a culet.
brilliant full cut
Diamond cut with 32 crown facets, 24 pavilion facets, an octagonal table and a culet.