mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Hardness: 6.5-7 (Mohs scale), Color: Pale to deep green, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None, Specific Gravity: 2.64-2.69

Hardness: 6

Identified June 14, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: Pale to deep green, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None, Specific Gravity: 2.64-2.69

Formation & geological history

Formed in igneous or metamorphic environments when silica-rich fluids crystallize; the characteristic green color and aventurescence are caused by platy inclusions of green chromium-rich muscovite mica (fuchsite).

Uses & applications

Widely used for ornamental carvings, beads, cabochons for jewelry, and as a popular specimen for crystal collecting and lapidary practice.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to the accidental discovery of aventurine glass (goldstone) in the 18th century before the natural mineral was named.

Field identification & locations

Identified in the field by its green color and 'aventurescence,' a shimmering or glistening effect caused by light reflecting off mica inclusions. Commonly found in India, Brazil, Russia, and Austria.

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