mineral
Yellow Aventurine
Silicon Dioxide with inclusions (SiO2)
Hardness: 7 Mohs; Color: Yellow to gold-orange; Luster: Vitreous to waxy with aventurescence; Crystal structure: Trigonal/Hexagonal; Cleavage: None
- Hardness
- 7 Mohs
- Color
- Yellow to gold-orange
- Luster
- Vitreous to waxy with aventurescence
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Physical properties
Hardness: 7 Mohs; Color: Yellow to gold-orange; Luster: Vitreous to waxy with aventurescence; Crystal structure: Trigonal/Hexagonal; Cleavage: None
Formation & geological history
Formed in magmatic and metamorphic environments where quartz crystallizes with mica or iron oxide inclusions. The yellow color is typically caused by inclusions of mica or hematite/goethite.
Uses & applications
Commonly used for tumbled stones, decorative carvings, cabochons for jewelry, and in New Age practices as a healing crystal.
Geological facts
Yellow aventurine is known for its 'aventurescence,' a shimmering effect caused by platy mineral inclusions. It is often mistaken for citrine or orange calcite, but its hardness is a key difference.
Field identification & locations
Identify in the field by its hardness (will scratch glass) and the presence of tiny internal reflections or mica flakes. Frequently found in India, Brazil, and parts of Russia.
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