mineral

Green Aventurine

Tectosilicate, variety of Quartz (SiO2) containing Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Hardness: 7 Mohs; Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: None; Specific gravity: 2.64-2.69; Features aventurescence (shimmer).

Hardness: 7 Mohs
Color: Pale to deep green
Luster: Vitreous to waxy

Identified June 24, 2026More mineral →

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Physical properties

Hardness: 7 Mohs; Color: Pale to deep green; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: None; Specific gravity: 2.64-2.69; Features aventurescence (shimmer).

Formation & geological history

Formed primarily in metamorphic environments through the recrystallization of quartz grains in the presence of mica-like inclusions (fuchsite). Most often found in metamorphic rocks like phyllites or schists.

Uses & applications

Used extensively in jewelry (beads, cabochons), carvings, decorative ornaments, and as a popular stone for collectors and metaphysical practices.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', referring to the accidental discovery of aventurine glass in the 18th century which shares its shimmer.

Field identification & locations

Identify by its characteristic green color combined with a subtle internal shimmer or glisten (aventurescence). Commonly found in India, Brazil, Russia, and Tanzania.

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