A 0.78-carat Round brilliant Zultanite specimen with Moderate — color shift visible but partial, suitable for accent stone. Cut from rough mined in the İlbir Mountains, Türkiye, in 2022 by a master cutter specializing in cleavage-aware lapidary on diaspore. Approximate dimensions 5.8 × 5.8 × 3.5 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

Moderate — color shift visible but partial, suitable for accent stone.

Physical specification

Weight: 0.78 carats. Dimensions: 5.8 × 5.8 × 3.5 mm. Cut: Round brilliant. Cut year: 2022. Locality: İlbir Mountains, Muğla Province, Türkiye.