Gem-quality color-change diaspore is mined in the İlbir Mountains of Muğla Province, southwestern Türkiye. The mining operation is small-scale and selective: rough is hand-picked from metamorphic pockets within bauxite-derived deposits, then transported to specialist cutters. Production volume is intentionally limited by the structural constraints of the deposit — the geological pockets that produce gem-quality crystals are not extensive — which is the structural basis of Zultanite's rarity.

The verified facts

This entry is part of the Zultpedia editorial archive on color-change diaspore from the İlbir Mountains of southwestern Türkiye. The specific claims above are documented in the cited primary sources and cross-referenced with the related property guides and laboratory standards.

Editorial framing

Zultpedia treats color-change diaspore as a single-source mineral species first and a trade-name commodity second. Editorial standards, source hierarchy, and corrections process are documented on the methodology page.

Cross-references

See also the related entries listed beneath this article and the property guides for verified physical and optical values.