step cut

step cut
step-cut, adj.
Jewelry.
a cut consisting of a rectangular girdle, often faceted, with two or more tiers of narrow facets running parallel to the girdle on both the crown and the pavilion: used esp. in stones in which color is more important than brilliance. Also called trap cut.
[1860-65]

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▪ gem cutting
also called  Trap Cut, or Cushion Cut,  

      method of faceting coloured gemstones in which the stone produced is rather flat with steps, or rows, of four-sided facets parallel to the girdle (the stone's widest part). Because the facets are parallel to the girdle, they are usually long and narrow, except at the corners of the stone. The angles that the main facets make with the plane of the girdle greatly affect the brilliance of the stone. Emerald, tourmaline, topaz, and amethyst are often cut in this fashion.

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Universalium. 2010.

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