mineral
Charoite
K5Ca4Si8O22(OH,F)·H2O
AI-generated identification · may be incorrectHardness of 5-6 on the Mohs scale, vivid violet to purple color with swirling white or black patterns, pearly to vitreous luster, monoclinic crystal system.
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Physical properties
Hardness of 5-6 on the Mohs scale, vivid violet to purple color with swirling white or black patterns, pearly to vitreous luster, monoclinic crystal system.
Formation & geological history
Formed through metasomatism of limestone by a nepheline syenite intrusion, found uniquely in the Aldan Shield of Eastern Siberia, Russia.
Uses & applications
Used primarily as an ornamental gemstone for cabochons, polished decorative objects, and high-end jewelry.
Geological facts
Charoite is monomineralic and exceptionally rare, sourced from only one primary region globally along the Chara River.
Field identification & locations
Readily identified by its distinctive fibrous, chatoyant purple swirls and complex silicate matrix; popular among advanced collectors.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
mineral
Limonite
FeO(OH)•nH2O
mineral
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
mineral