mineral

Green Aventurine

SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Translucent green; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: None; Specific Gravity: 2.64-2.69

Hardness: 6
Color: Translucent green
Luster: Vitreous to waxy

Identified February 26, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Translucent green; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: None; Specific Gravity: 2.64-2.69

Formation & geological history

Formed in igneous and metamorphic rocks (primarily quartzites) where silicate solutions crystallize over long periods, trapping chromium-rich fuchsite mica that gives the green hue.

Uses & applications

Extensively used for ornamental carvings, tumble stones, cabochons for jewelry, and as a decorative stone in landscaping and flooring.

Geological facts

The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' referencing the discovery of aventurine glass or 'goldstone' in the 18th century, which looks similar to this natural stone.

Field identification & locations

Identify in the field by its distinct green color and 'aventurescence' (a shimmering or glistening effect caused by platy mineral inclusions). Common locations include India, Brazil, Russia, and Austria.