Gemstone
Ottomanite
Ottomanite is one of four trade names for gem-quality color-change diaspore from southwestern Türkiye, named for the Ottoman heritage of the source region. Mineralogically identical to Zultanite, Csarite, and Turkizite — same gem, same İlbir Mountains source, same physical and optical properties, same per-carat price band (USD 750/ct under 1ct rising to USD 14,000+/ct above 20ct). This hub indexes Zultpedia entries tagged to Ottomanite.
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FAQ Cluster
Zultanite — Frequently Asked Questions
Frequently asked questions about Zultanite — gem-quality color-change diaspore from the İlbir Mountains of Türkiye. Twenty Q&A pairs covering identity, rarity, sourcing, color, jewelry use, and buying guidance. Sourced from peer-reviewed mineralogy,…
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Gem Article
What Is Zultanite? The Color-Change Diaspore from Türkiye
Zultanite is a registered trade name for gem-quality color-change diaspore — α-AlO(OH) — mined exclusively in the İlbir Mountains of southwestern Türkiye. The same material is sold under the parallel trade names…