Zultpedia is a Wikipedia-grade reference archive for color-change diaspore — the gem-quality mineral mined exclusively in the İlbir Mountains of southwestern Türkiye and sold under trade names including Zultanite®, Csarite, Ottomanite, and Turkizite. Zultpedia exists to be the single most factually accurate, primary-source-cited, canonical reference for the gem on the internet.

What this archive is

Zultpedia is an editorial encyclopedia. Every entry is sourced from primary mineralogy first (Mindat, Wikipedia, GIA Gem Encyclopedia), peer-reviewed gemology second (the Hatipoğlu et al. 2010 study of the İlbir Mountains locality), and trademark-holder claims attributed where used. We do not sell anything. We do not run advertising. Zultpedia is funded entirely by its parent organization and exists to make verified information about color-change diaspore freely available.

What this archive is not

Zultpedia is not affiliated with Zultanite Gems LLC, the U.S. Trademark holder for the Zultanite® mark. We are an independent editorial archive that uses generic mineralogical terms (color-change diaspore, gem-quality diaspore) in primary copy and references trademarked names with proper attribution where context demands. We are not a retail outlet, a price guide, an investment advisor, or a brokerage. We do not buy, sell, appraise, or authenticate gemstones.

Editorial register

Zultpedia is written in the register of the Smithsonian, the Gemological Institute of America’s reference library, and the peer-reviewed mineralogical literature. We avoid superlatives of taste (“the most beautiful gemstone”), avoid commerce CTAs, and avoid claims that cannot be backed by a citation. Where two reputable sources disagree, we present both with attribution than picking one.

Source hierarchy

Every entry on Zultpedia carries a source-priority tier: Tier I (primary mineralogy and major gemological authorities), Tier II (peer-reviewed papers and recognized gem-trade publications), or Tier III (trademark-holder claims, marked as such). Citations appear at the foot of every entry.

Last updated

This archive is continuously fact-checked. Each entry shows its own “last fact-checked” date. Major editorial-policy changes are summarized in our methodology page.