Rock Identifier
Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral
mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Hardness: 7 Mohs scale; Color: Green (from Fuchsite); Luster: Vitreous to waxy; Crystal Structure: Trigonal (hexagonal); Specific Gravity: 2.64–2.69; Notable for its 'aventurescence' (metallic glisten).

Hardness
7 Mohs scale
Color
Green (from Fuchsite)
Luster
Vitreous to waxy
Identified More mineral

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Physical properties

Hardness: 7 Mohs scale; Color: Green (from Fuchsite); Luster: Vitreous to waxy; Crystal Structure: Trigonal (hexagonal); Specific Gravity: 2.64–2.69; Notable for its 'aventurescence' (metallic glisten).

Formation & geological history

Formed in magmatic and metamorphic environments where tectonic plates interact, occurring over millions of years. It specifically forms when mineral-rich hydrothermal solutions penetrate quartz, depositing chromium-rich mica (Fuchsite) which provides the green tint.

Uses & applications

Primarily used in jewelry for beads, cabochons, and bracelets; also used for ornamental carvings, figurines, and as a popular stone for crystal healing and mineral collecting.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to the 18th-century discovery of Italian 'Goldstone' glass which mimicked the natural stone's glitter. It is often called the 'Stone of Opportunity.'

Field identification & locations

Identify in the field by its grainy, shimmering texture and characteristic green color that is not perfectly uniform. It is commonly found in India (where the largest deposits are), Brazil, Russia, and Tanzania. Unlike jade, it has a distinct crystalline glitter when rotated under light.