mineral

Green Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of Fuchsite

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Green to grey-green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (microcrystalline); Cleavage: None; Specific gravity: 2.64-2.69

Hardness: 7 on Mohs scale
Color: Green to grey-green
Luster: Vitreous to waxy

Identified July 21, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Green to grey-green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (microcrystalline); Cleavage: None; Specific gravity: 2.64-2.69

Formation & geological history

Formed in magmatic and hydrothermal environments, as well as metamorphic rocks like phyllites and schists. The green color is caused by chrome-bearing mica called fuchsite.

Uses & applications

Used extensively in jewelry for beads, cabochons, and carvings, as well as an ornamental stone in landscaping and aquariums.

Geological facts

Aventurine is known for its 'aventurescence,' a shimmering effect caused by platy mineral inclusions. It is often mistaken for jade but is much harder.

Field identification & locations

Identified by its sandy/sparkly appearance (aventurescence) and conchoidal fracture. Commonly found in India, Brazil, and Russia. Collectors look for a deep green color and high translucency.