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

Green Aventurine

Quartz variety (SiO2 with inclusions of Fuchsite)

Hardness: 7 Mohs; Color: Pale green to forest green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.64-2.69. It is known for its platy mica inclusions which cause 'aventurescence'.

Hardness
7 Mohs
Color
Pale green to forest green
Luster
Vitreous to waxy
Identified More mineral

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Physical properties

Hardness: 7 Mohs; Color: Pale green to forest green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.64-2.69. It is known for its platy mica inclusions which cause 'aventurescence'.

Formation & geological history

Formed in igneous or metamorphic environments when silica-rich fluids cool. The green color and shimmer come from the inclusion of chromium-rich muskavite mica (fuchsite) during the crystallization process.

Uses & applications

Primarily used for ornamental carvings, jewelry (cabochons, beads), tumbling, and as a popular meditation stone in alternative healing practices.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance'. This refers to the lucky discovery of aventurine glass or goldstone in the 18th century, which looks similar to the natural mineral.

Field identification & locations

Identify by its characteristic pale green color and the presence of glittering specks (aventurescence) when held under light. Commonly found in India, Brazil, and Russia. It can be distinguished from jade by its higher hardness and sparkly mica inclusions.