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 in hydrothermal veins or through the thermal metamorphism of amethyst, often found in pegmatites and igneous rocks.
Uses & applications
Widely used in jewelry making, ornamental carvings, and as a popular 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 distinctive yellow color and quartz crystal habit, commonly sourced from Brazil, Madagascar, and the USA.
