mineral
Citrine Quartz (Carved Point)
Silicon Dioxide (SiO2) with iron impurities
Hardness: 7 on the Mohs scale. Color: Yellow to brownish-orange. Luster: Vitreous (glassy). Crystal Structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific Gravity: 2.65
- Hardness
- 7 on the Mohs scale
- Color
- Yellow to brownish-orange
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 on the Mohs scale. Color: Yellow to brownish-orange. Luster: Vitreous (glassy). Crystal Structure: Trigonal. Cleavage: None, exhibits conchoidal fracture. Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins, pegmatites, and metamorphic rocks. Natural citrine is rare, and much commercial citrine is created by heat-treating purple amethyst or smoky quartz.
Uses & applications
Used widely in jewelry, as decorative crystal towers or points, in crystal healing practices, and by collectors.
Geological facts
Natural citrine gets its yellow-to-orange color from sub-microscopic colloidal dispersion of iron hydroxide. The name comes from the French word 'citron', meaning lemon.
Field identification & locations
Identified by its yellow-orange color and a hardness of 7 which easily scratches glass. It is commonly found globally, with major deposits in Brazil, Madagascar, and the USA.
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