Color-change diaspore is sold without heat, irradiation, fracture-filling, or surface coating treatments because none of those treatments would produce a useful effect: the alexandrite optical phenomenon is structural and chromophoric, not amenable to enhancement. Any "treated Zultanite" claim is either misleading marketing of an untreated stone or a misidentified non-diaspore. Lab reports for diaspore explicitly note "no evidence of treatment" as the documented norm.

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.