mineral

Orange Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Rusty orange/amber to yellow; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Rusty orange/amber to yellow
Luster: Vitreous (glassy)

Identified March 29, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Rusty orange/amber to yellow; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed in igneous or metamorphic environments when silica-rich hydrothermal fluids cool and crystallize. The orange hue is caused by colloidal iron hydroxide (limonite) staining or internal iron impurities.

Uses & applications

Used in the gemstone and jewelry trade, lapidary arts (cabochons), and highly prized by metaphysical collectors. Industrial grade quartz is used in glassmaking and electronics.

Geological facts

Natural citrine is rare; many specimens are actually heat-treated amethyst. This specific jagged, iron-stained specimen is common in gravel deposits and riverbeds. Quartz is the second most abundant mineral in Earth's continental crust.

Field identification & locations

Identify by its ability to scratch glass and lack of cleavage planes. Found globally in pegmatites and metamorphic veins. Collectors look for translucency and vibrancy of color.

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