Clean color-change diaspore only with warm soapy water and a soft brush. Never use ultrasonic cleaners (vibrations can propagate the {010} cleavage), never use steam (thermal shock risk), and avoid acidic or solvent-based cleaners. Store separately from harder gems (sapphire, diamond, topaz) in a soft-lined compartment to prevent surface scratching. Avoid prolonged exposure to direct sunlight, which can dehydrate the OH structure over decades.

The verified facts

This entry is part of the Zultpedia editorial archive on color-change diaspore from the İlbir Mountains of southwestern Türkiye. Mineral species: diaspore (α-AlO(OH)). Hardness: 6.5–7 Mohs. Refractive index: 1.682–1.752. Specific gravity: 3.30–3.39. The verified mineralogical baseline is documented across the property guides; the citations beneath this entry trace each claim to its primary source.

Editorial framing

Zultpedia treats color-change diaspore as a single-source mineral species first and a trade-name commodity second. The trade names Zultanite®, Csarite, Ottomanite, and Turkizite all refer to the same gem from the same locality; mineralogical claims apply equally to all four.

Cross-references

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