The threshold. Off-white stones carry the faintest cast, visible against a truly colorless diamond and invisible on the hand. The report notices. The eye does not. Set in warm metal, almost nothing of the look is lost.

Kite, hexagon, shield, lozenge, bullet, trilliant. Angular outlines we pushed into the mainstream in 2014, when the trade still cut almost everything round. A straight edge behaves differently than a curve- it sits flush against another stone, holds a line in a cluster, and gives a designer geometry to build on rather than work around.