gemstone

Green Aventurine

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Hardness: 7 (Mohs scale), Color: Shimmering green, Luster: Vitreous to waxy, Crystal structure: Trigonal/Microcrystalline, Cleavage: None, Specific gravity: 2.64-2.69

Identified July 11, 2026More gemstone →

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Physical properties

Hardness: 7 (Mohs scale), Color: Shimmering green, Luster: Vitreous to waxy, Crystal structure: Trigonal/Microcrystalline, Cleavage: None, Specific gravity: 2.64-2.69

Formation & geological history

Formed in metamorphic environments where silica-rich fluids permeate through rocks containing mica, creating the characteristic spangled appearance known as aventurescence. Primarily formed during regional metamorphism.

Uses & applications

Widely used in jewelry (beads, pendants, cabochons), carved into figurines, and used as a popular healing or decorative stone in the metaphysical community.

Geological facts

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

Field identification & locations

Identify by its 'aventurescence' (metallic glints caused by mica inclusions). It is commonly found in India, Brazil, and Russia. Unlike green quartz, aventurine has distinct internal grains/flakes.

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