mineral

Green Aventurine (Quartz)

SiO2 (Silicon Dioxide with Fuchsite inclusions)

Hardness: 7 Mohs scale; Color: Dark forest green with aventurescence (shimmer); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69

Hardness: 7 Mohs scale
Color: Dark forest green with aventurescence (shimmer)
Luster: Vitreous to waxy

Identified March 1, 2026More mineral →

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Physical properties

Hardness: 7 Mohs scale; Color: Dark forest green with aventurescence (shimmer); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69

Formation & geological history

Formed in metamorphic environments where quartz-rich rocks undergo heat and pressure, allowing mica inclusions like fuchsite to align and create the characteristic shimmer. Common in Precambrian deposits.

Uses & applications

Primarily used in jewelry (cabochons, beads), decorative carvings, and alternative healing practices. Also occasionally used as a minor industrial abrasive.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to a type of glass created accidentally in the 18th century that looked similar to this natural stone.

Field identification & locations

Identify by its characteristic 'aventurescence' (metallic glint from internal mica platelets) and its hardness which can scratch glass. Commonly found in India, Brazil, Russia, and Austria.

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