Some sapphires are cut to sparkle. This one is cut to be looked into. The step-cut crown and pavilion trade brilliance for depth, opening long, uninterrupted windows into the stone — and what they reveal is a dense, almost emerald-dark bluish-green, threaded with fine natural silk that catches the light in long silver lines rather than scattered flashes. It's the kind of internal landscape that only an emerald cut can show off, and only an untreated stone can show honestly. GFCO confirms no heat, no treatment, Sutara origin. In twelve years of handling colored stones, I see very few that stop me mid-sort. This one did. It is, without qualification, one of the finest sapphires to pass through this house.