A 4.50-carat Oval brilliant Zultanite specimen with Strong — clean shift with no muddy intermediate, exceptional clarity. Cut from rough mined in the İlbir Mountains, Türkiye, in 2017 by a master cutter specializing in cleavage-aware lapidary on diaspore. Approximate dimensions 11 × 9 × 5.5 mm.

Provenance

This specimen was cut from rough mined in the İlbir Mountains of southwestern Türkiye — the only currently producing locality for gem-quality color-change diaspore. The rough was cut by a master cutter trained to orient the table facet to minimize cleavage exposure on the {010} plane.

Optical performance

Strong — clean shift with no muddy intermediate, exceptional clarity.

Physical specification

Weight: 4.50 carats. Dimensions: 11 × 9 × 5.5 mm. Cut: Oval brilliant. Cut year: 2017. Locality: İlbir Mountains, Muğla Province, Türkiye.