mineral
Citrine
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale), Color: Yellow to brownish-orange, Luster: Vitreous, Crystal Structure: Hexagonal (trigonal), Cleavage: None, Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Yellow to brownish-orange, Luster: Vitreous, Crystal Structure: Hexagonal (trigonal), Cleavage: None, Specific Gravity: 2.65
Formation & geological history
Citrine is a variety of quartz that forms in igneous and metamorphic rocks. Most commercial citrine is produced by heat-treating amethyst or smoky quartz to a temperature of 750-1200 degrees Fahrenheit.
Uses & applications
Primarily used in jewelry as a gemstone and as a popular collector specimen in mineralogy.
Geological facts
Citrine is known as the 'Success Stone' or 'Merchant's Stone' in folklore. Natural citrine is actually quite rare; most of the vibrant orange citrine on the market is heat-treated amethyst.
Field identification & locations
Identify by its transparent yellow color and lack of cleavage. In the field, look for hexagonal crystal habits. Common locations include Brazil, Madagascar, and Russia.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary