Emerald cut diamonds have a dramatic hall of mirrors effect. Descended from the step cut, emerald cuts were standardized in the 1940s. The step cut emerged as one of the first faceted diamond cuts, third in line after the point cut and the table cut. In the step cut the shape of the rough diamond usually dictated the position and placement of the facets, allowing to maximize the carat weight of the final gem. Usually these had larger crowns and smaller tables.
Modern emerald cuts are made with a precise faceting technique with pavilion steps and a larger open table. These have a hall of mirrors effect, with an interplay of light and dark planes. Long lines and dramatic flashes of light give the emerald cut an elegant appeal. The shape was originally developed for cutting emeralds, thus the name.