mineral
Citrine
Silicon dioxide with iron impurities (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellow to orange-brown color, vitreous luster, and hexagonal crystal system with conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, yellow to orange-brown color, vitreous luster, and hexagonal crystal system with conchoidal fracture.
Formation & geological history
Forms in hydrothermal veins or through the thermal metamorphism of lower-grade amethyst, often found in igneous pegmatites.
Uses & applications
Widely used as a popular gemstone in jewelry and valued as a decorative collector mineral.
Geological facts
Natural citrine is relatively rare, with most commercial specimens produced by heat-treating purple amethyst or smoky quartz.
Field identification & locations
Identified by its distinctive yellow color and lack of cleavage, commonly sourced from Brazil, Madagascar, and the USA.
