See our: diamond brilliant cut.A modification of the brilliant cut, used on small diamonds (usually under the 0.05 carats) that has 17-18 facets: an octagonal table to which abut 8 isosceles-trapezoid facets, the lower and longersides of which form the octagonal girdle, and below the girdle and abutting it (forming the pavilion) 8 triangular facets extending down to a point (or sometimes isosceles-trapezoid facets extendingdown to a small culet). The pavilion is slightly deeper than the crown. Also called the 'eight cut' or, when cut with circular girdle, 'rounded single cut'.
Single Cut Diamond

Single Cut Diamond
See our: diamond brilliant cut.A modification of the brilliant cut, used on small diamonds (usually under the 0.05 carats) that has 17-18 facets: an octagonal table to which abut 8 isosceles-trapezoid facets, the lower and longersides of which form the octagonal girdle, and below the girdle and abutting it (forming the pavilion) 8 triangular facets extending down to a point (or sometimes isosceles-trapezoid facets extendingdown to a small culet). The pavilion is slightly deeper than the crown. Also called the 'eight cut' or, when cut with circular girdle, 'rounded single cut'.
References
From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson



