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Reference
Zultanite Articles
In-depth articles on Zultanite (gem-quality color-change diaspore from the İlbir Mountains of Türkiye): mineralogy, lapidary, geology, sourcing, identification, history, and the trace-element chemistry behind the alexandrite effect. Every entry is signed by a credentialed editor and fact-checked against primary sources. Buyers and graders begin here for the structural reasons behind Zultanite's rarity, durability, and per-carat price band of USD 750 to USD 14,000+.
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Gem Article
The Color-Change Phenomenon in Zultanite — How and Why It Works
The color-change phenomenon in Zultanite — properly called the alexandrite effect — is a perceptual outcome of selective light absorption, not a property of the stone changing. Trace iron and chromium ions…
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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…
