mineral
Citrine
Silicon Dioxide (Quartz variety), SiO2
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellow to orange-brown color, vitreous luster, hexagonal 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, hexagonal crystal system, and no cleavage.
Formation & geological history
Forms naturally via the hydrothermal crystallization of quartz with trace iron impurities, or artificially through heat-treatment of amethyst.
Uses & applications
Widely used as a popular gemstone in jewelry and valued as a decorative collector mineral.
Geological facts
Natural citrine is relatively rare; most commercial citrine is actually heat-treated amethyst or smoky quartz.
Field identification & locations
Identified by its distinct yellow-to-orange hue and lack of cleavage, commonly sourced from Brazil, Madagascar, and the US.
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Sandstone (with potential mineral staining/concretions)
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Pegmatite with Tourmaline and Quartz
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Epidote
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Granite
Granite (Phaneritic intrusive igneous rock)
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