Mineral (Variety of Quartz)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

AI-generated identification · may be incorrect

Hardness: 6.5 - 7 (Mohs scale); Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal (often found in massive form); Cleavage: None (conchoidal fracture); Specific gravity: 2.64 - 2.69; Notable for its 'aventurescence' (shimmering effect).

Hardness: 6
Color: Pale to deep green
Luster: Vitreous to waxy

Identified March 31, 2026More mineral (variety of quartz) →

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Physical properties

Formation & geological history

Formed in metamorphic environments where quartz-rich rocks are subjected to pressure and heat, allowing for the inclusion of green chromium-rich mica (Fuchsite). It can also occur in igneous pegmatites. Geological age varies by locality but is found in ancient metamorphic shields.

Uses & applications

Primarily used for decorative purposes, jewelry (beads, cabochons), carvings, tumble stones for collectors, and as a landscaping stone. It is very popular in the metaphysical community.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' referring to the accidental discovery of aventurine glass (goldstone) in the 18th century, which looks similar. It is often called the 'Stone of Opportunity.'

Field identification & locations

Identify in the field by its green color, quartz-like hardness (it will scratch glass), and its characteristic internal shimmer when held under light. Commonly found in India, Brazil, Russia, and Tanzania. Collectors look for uniform color and strong shimmer.