Trapezoid

Trapezoid step cut diamond
Photo courtesy of Scott Papper, GIA GG, AJP, Global Gemology & Appraisals
Trapezoids are one of the many fancy diamond shapes.

Trapezoids, or traps for short, are four-sided diamonds with top and bottom sides parallel, and the other two sides slanting inward.

Traps are often cut into step cuts to accentuate their lines and angles.