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.

A single flat table over a shallow body, cut thin enough that the stone becomes a window. Portrait cuts were originally set over miniature paintings in Mughal and Georgian jewelry, protecting the image without hiding it. There is almost no faceting to hide behind: you read the crystal itself, directly.