gemstone
Citrine
Silicon dioxide (Quartz variety)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellow to brownish-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 brownish-orange color, vitreous luster, hexagonal crystal system, and conchoidal fracture with no cleavage.
Formation & geological history
Forms naturally through the hydrothermal growth or low-temperature metamorphism of iron-bearing quartz, though most commercial citrine is heat-treated amethyst.
Uses & applications
Widely used as a popular gemstone in rings, necklaces, and earrings, as well as for decorative carvings and crystal healing.
Geological facts
Natural citrine is relatively rare compared to heat-treated amethyst, and its distinct yellow color is caused by trace amounts of iron impurities.
Field identification & locations
Identified by its yellow color, high hardness, and lack of cleavage. Commonly sourced from Brazil, Madagascar, and Russia.
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