mineral

Green Aventurine

Quartz variety (SiO2 with inclusions)

Hardness: 7 on Mohs scale; Color: Pale green to forest green; Luster: Vitreous to waxy; Crystal structure: Trigonal (often massive); Cleavage: None (conchoidal fracture); Specific gravity: 2.64-2.69. It is characterized by aventurescence, a shimmering effect caused by platy inclusions of fuchsite mica.

Hardness: 7 on Mohs scale
Color: Pale green to forest green
Luster: Vitreous to waxy

Identified May 9, 2026More mineral →

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Physical properties

Formation & geological history

Formed in metamorphic rocks and magmatic environments where silica-rich fluids permeate through rock cavities. Its characteristic inclusions are usually mica (fuchsite) or hematite/goethite, which grow within the quartz matrix during formation.

Uses & applications

Widely used for cabochons, beads, ornamental carvings, clock faces, and tumbled stones for aquarium decoration and metaphysical collections.

Geological facts

Aventurine is often mistaken for jade due to its color, but it is much harder. The name 'aventurine' is derived from the Italian word 'a ventura', which means 'by chance', originally referring to the accidental discovery of aventurine glass (goldstone) in the 18th century.

Field identification & locations

Identified by its distinctive speckled green appearance and shimmering mica plates when held under a light. Frequently found in India, Brazil, Russia, and Tanzania. For collectors, check for the metallic sparkles of chrome-mica to distinguish it from green glass or jadeite.

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