mineral

Green Aventurine

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

Hardness: 7 Mohs; Color: Pale to forest green with a shimmering effect; Luster: Vitreous; Crystal Structure: Trigonal (hexagonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.64-2.69

Hardness: 7 Mohs
Color: Pale to forest green with a shimmering effect
Luster: Vitreous

Identified May 25, 2026More mineral →

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Physical properties

Hardness: 7 Mohs; Color: Pale to forest green with a shimmering effect; Luster: Vitreous; Crystal Structure: Trigonal (hexagonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.64-2.69

Formation & geological history

Formed in metamorphic rocks when silica-rich fluids fill cavities and recrystallize, with inclusions of Fuchsite mica providing the green hue and 'aventurescence'. Found across all geological ages in orogenic belts.

Uses & applications

Primarily used in jewelry, lapidary arts, decorative or ornamental objects, and as a popular metaphysical pocket stone or worry stone.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of goldstone glass in the 18th century. It is known for its distinct shimmering effect called aventurescence.

Field identification & locations

Identify by its characteristic green color and internal glittery reflections caused by mica. Often found in Brazil, India, and Russia. Used by collectors for its aesthetic appeal and relative affordability.

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