mineral

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)

Hardness: 7 Mohs; Color: Forest green to sparkly light green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific Gravity: 2.64-2.69. Known for aventurescence (a glistening effect).

Hardness: 7 Mohs
Color: Forest green to sparkly light green
Luster: Vitreous to waxy

Identified July 14, 2026More mineral →

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Physical properties

Formation & geological history

Forms in metamorphic rocks such as phyllites and schists, as well as in hydrothermal veins. The color is derived from inclusions of chromium-rich fuchsite mica. Formation occurs over millions of years through recrystallization of quartz.

Uses & applications

Primarily used for jewelry (beads, cabochons), metaphysical practices, ornamental carvings, and tumbled stones for collectors.

Geological facts

Aventurine is often called the 'Stone of Opportunity.' Its 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 characteristic green color and internal 'specks' or sparkles caused by mica. Commonly found in India, Brazil, Russia, and Tanzania. Often confused with jade or green quartz.

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sedimentary

Schist

Metamorphic

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sedimentary

Potassium Feldspar (Orthoclase)

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Gypsum (variety Selenite or Alabaster)

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Mineral/Rock