3.10-Carat Zultanite — Cushion Cut, Champagne-Phase Visible

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Specimen

3.10-Carat Zultanite — Cushion Cut, Champagne-Phase Visible

Zultanite
Fact-checked 2026-04-27

By Marcus Whitlock, GG, FGA Lapidary & Cutting Editor

A 3.10-carat cushion-cut Zultanite specimen displaying the full three-illuminant range: sage-green under daylight, champagne-gold under indoor incandescent, and pinkish-orange under candlelight. Cut from rough recovered in 2020. Approximately 8 × 8 × 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 — three-illuminant range with visible champagne-gold mid-phase.

Physical specification

Weight: 3.10 carats. Dimensions: 8 × 8 × 5 mm. Cut: Cushion.

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