mineral
Citrine
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellow to orange color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, yellow to orange color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.
Formation & geological history
Forms naturally through the low-temperature hydrothermal crystallization of quartz or by the heat-treatment of amethyst.
Uses & applications
Widely used in jewelry, ornamental carvings, and appreciated for its value in crystal healing and collections.
Geological facts
Natural citrine is relatively rare compared to heat-treated amethyst, which accounts for most commercial specimens.
Field identification & locations
Identified by its distinctive yellow hue and quartz hardness; commonly sourced from Brazil, Madagascar, and Russia.
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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
Limonite
FeO(OH)•nH2O
mineral
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous