mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Hardness: 7 (Mohs), Color: pale yellow to golden amber, Luster: Vitreous, Crystal Structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65

Identified April 7, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs), Color: pale yellow to golden amber, Luster: Vitreous, Crystal Structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65

Formation & geological history

Citrine is formed through the natural heating of amethyst or smoky quartz by geothermal heat. It is found in igneous rocks (pegmatites) or metamorphic environments. Natural citrine is rare compared to heat-treated varieties.

Uses & applications

Predominantly used as a gemstone in jewelry (rings, pendants) and as a popular specimen for mineral collectors and decorative items.

Geological facts

Natural citrine is quite rare; most 'citrine' in the commercial market is actually heat-treated amethyst or smoky quartz. It is known as the 'Success Stone' or 'Merchant's Stone' in folklore.

Field identification & locations

Identify by its hexagonal prism shape and lack of cleavage (breaks like glass). Look for it in quartz veins or areas with high volcanic/geothermal history. Natural citrine will show slight pleochroism, which heat-treated stones lack.

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