mineral
Citrine
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellow to orange-brown color, vitreous luster, trigonal crystal system, and no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, yellow to orange-brown color, vitreous luster, trigonal crystal system, and no cleavage.
Formation & geological history
Formed in igneous, metamorphic, and sedimentary rocks, often through the hydrothermal alteration of amethyst or low-grade thermal metamorphism.
Uses & applications
Widely used in jewelry, as a decorative gemstone, and valued by mineral collectors for its warm, sunny hue.
Geological facts
Natural citrine is quite rare; most commercial citrine on the market is actually heat-treated amethyst or smoky quartz.
Field identification & locations
Identified by its distinct yellow-to-orange color and a 7 Mohs hardness that easily scratches glass; commonly sourced from Brazil, Madagascar, and Russia.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous