gemstone
Citrine
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellow to brownish-orange color, vitreous luster, hexagonal crystal structure, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, yellow to brownish-orange color, vitreous luster, hexagonal crystal structure, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed in igneous, metamorphic, and sedimentary rocks, often resulting from the heating of amethyst or smoky quartz.
Uses & applications
Commonly used in jewelry as a gemstone, particularly in rings, pendants, and earrings.
Geological facts
Natural citrine is relatively rare; most commercial citrine is heat-treated amethyst or smoky quartz. It is the traditional birthstone for November.
Field identification & locations
Identified by its yellow to orange color and quartz properties. Found in Brazil, Madagascar, and the US.
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