mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Hardness: 7 (Mohs scale), Color: Pale to medium green, Luster: Vitreous to waxy, Crystal structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific gravity: 2.64-2.69
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Physical properties
Hardness: 7 (Mohs scale), Color: Pale to medium green, Luster: Vitreous to waxy, Crystal structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific gravity: 2.64-2.69
Formation & geological history
Formed in magmatic and metamorphic environments where quartz crystallizes with mineral inclusions such as fuchsite mica, which provides the signature green color and a shimmering effect known as aventurescence.
Uses & applications
Widely used in jewelry (beads, cabochons), ornamental carvings, tumbled stones for collecting, and as a decorative stone in landscaping or mosaics.
Geological facts
The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to a type of Italian glass accidentally discovered in the 18th century that looked similar to this natural stone.
Field identification & locations
Identify by its characteristic 'shimmer' or sparkly inclusions under light. It is commonly found in India, Brazil, and parts of Russia. Field identification relies on hardness testing and its distinctive translucent green appearance.
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