Mineral (Variety of Quartz)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Hardness: 6.5-7 (Mohs scale); Color: Pale green to dark forest green; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Hexagonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.64-2.69; Notable for 'aventurescence' (metallic glimmer).

Hardness: 6
Color: Pale green to dark forest green
Luster: Vitreous to waxy

Identified March 28, 2026More mineral (variety of quartz) →

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Physical properties

Formation & geological history

Formed through metamorphic processes where silica-rich fluids permeate existing rocks, crystallization occurs slowly as the environment cools. Green colors are typically derived from inclusions of chrome-rich mica (fuchsite).

Uses & applications

Commonly used in jewelry (beads, cabochons), ornamental carvings, figurines, and as a popular stone in metaphysical practices and lapidary arts.

Geological facts

The name 'Aventurine' comes from the Italian word 'a ventura,' meaning 'by chance.' This refers to the accidental discovery of 'aventurine glass' in the 18th century, which looked remarkably like the natural stone.

Field identification & locations

Identify in the field by its characteristic green color and shimmering 'flecks' of mica inside the stone. Often found in India, Brazil, and parts of Russia. It can be distinguished from Jade by its lower toughness and higher transparency.

Other mineral (variety of quartz) specimens

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Yellow Aventurine

Silicon Dioxide (SiO2) with inclusion of Mica

Mineral (Variety of Quartz)

Blue Aventurine

Silicon Dioxide (SiO2) with inclusions of Dumortierite

Mineral (Variety of Quartz)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with various inclusions

Mineral, variety of Quartz

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Mineral (Variety of Quartz)

Green Aventurine

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

Mineral (variety of Quartz)

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Mineral (variety of Quartz)