A radiant cut green tourmaline in a collet setting, hung from a custom knife's edge bail. Satin finish. This stone was sourced from John Dyer for above-average cut quality and has excellent performance in light and color.

This setting style, originally popularized in Georgian and Victorian jewelry styles, has enjoyed a renewed popularity for its ability to both maximize light entering the crown of the stone while still protecting the girdle from damage. 

In architecture, an arris is the sharp line formed by the intersection of two distinct surfaces. The Arris charm is distinguished by the intersecting planes curving away from the stone's edge.

Pictured here with the Diamond Cut Cable Chain.