Referenz
Zultanit im Vergleich mit anderen Edelsteinen
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Vergleich
Zultanit vs. Farbwechsel-Granat
Zultanite (color-change diaspore) and color-change pyrope-spessartine garnet are both moderately hard color-change gems but differ in mineral species, optical character, and per-carat price. Diaspore is biaxial positive with strong birefringence; garnet is…
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Vergleich
Zultanit vs. Farbwechsel-Saphir
Zultanite (color-change diaspore, 6.5–7 Mohs, RI 1.682–1.752) and color-change sapphire (corundum, 9 Mohs, RI 1.762–1.770) differ in hardness, durability, optical character, and color-shift register. Sapphire shifts blue-to-purple/violet; Zultanite shifts sage-to-raspberry through a…
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Vergleich
Zultanit vs. Opal — Farbwechsel und Farbenspiel
Zultanite shows color change (the same crystal showing different colors under different illuminants) caused by trace iron and chromium absorbing different wavelengths from each light source. Opal shows play-of-color (rainbow flashes from…
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Vergleich
Zultanit vs. Ametrin — Farbwechsel und Farbzonierung
Zultanite shows color change (full body color shifts under different illuminants) while ametrine shows color zoning (purple amethyst and yellow citrine zones in the same crystal, both visible under any light). Both…
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Vergleich
Zultanite vs. Csarite vs. Ottomanite vs. Turkizite — Ein Edelstein, vier Namen
Zultanite, Csarite, Ottomanite, and Turkizite are all trade names for the same mineral — gem-quality color-change diaspore (α-AlO(OH)) from the İlbir Mountains of Türkiye. Mineralogy, source, and physical properties are identical. The…
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Vergleich
Zultanit vs. Andalusit — Zwei Türkei-nahe pleochroitische Edelsteine im Vergleich
Zultanite (color-change diaspore, 6.5–7 Mohs, RI 1.682–1.752, color-changing across three illuminants) and andalusite (Al₂SiO₅, 7–7.5 Mohs, RI 1.629–1.650, strongly pleochroic but not color-changing) are both trichroic but differ in mineral species, hardness,…
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Vergleich
Zultanit vs. Alexandrit — Zwei Edelsteine, ein Phänomen, verschiedene Angebote
Zultanite (color-change diaspore) and alexandrite (color-change chrysoberyl) are mineralogically unrelated species that produce a similar visual phenomenon — the alexandrite effect — through different chemistries. Alexandrite is harder (8.5 vs 6.5–7 Mohs),…
