mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Hardness: 6.5-7 (Mohs scale); Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (aggregate form); Cleavage: None; Specific gravity: 2.64-2.69

Hardness: 6
Color: Pale to dark green with a shimmering effect
Luster: Vitreous to waxy

Identified March 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed in magmatic and metamorphic environments where silica-rich fluids crystallize. The green color is derived from microscopic inclusions of chromium-rich mica called fuchsite. Age varies by deposit but many major deposits are Proterozoic to Palaeozoic.

Uses & applications

Predominantly used as a gemstone in jewelry, decorative carvings, beads, and tumbled stones. Historically used for ornaments and by glassmakers to simulate 'aventurescence'.

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, which looks very similar to this natural mineral.

Field identification & locations

Identify by its 'aventurescence' (a metallic glitter caused by flat mineral inclusions). It is commonly found in India (the largest producer), Brazil, Russia, and Tanzania. In the field, look for a quartz-like hardness and distinct shimmery green color.

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