LOZENGE

a modern four-sided trap-cut for diamond or other transparent gemstones having a lozenge-shaped table. In this cut each of the four sides are bordered by a sloping trapezoidal facet. Also known as lozenge step cut.

Lozenge cut diamonds are also referenced as shield cut diamonds, due to the nature of their shape. It's a unique cut that utilizes a step cut and more closely resembles a rose cut diamond than a traditional brilliant cut diamond.