mineral

Aventurine

Quartz (SiO2) with inclusions of Fuchsite

Hardness: 7 on Mohs scale; Color: Green (from fuchsite); Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.64-2.69. Displays aventurescence.

Hardness: 7 on Mohs scale
Color: Green (from fuchsite)
Luster: Vitreous to waxy

Identified May 16, 2026More mineral →

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Physical properties

Formation & geological history

Formed in plutonic igneous rocks or metamorphic environments through the crystallization of silica-rich solutions where mica or other mineral inclusions are present. Found in deposits millions of years old.

Uses & applications

Primarily used for jewelry, lapidary work, cabochons, ornamental carvings, and 'healing' stones. Minor uses in high-end decor.

Geological facts

Aventurine is known as the 'Stone of Opportunity.' Its name comes from the Italian word 'a ventura,' which means 'by chance,' originally referring to the accidental discovery of goldstone glass.

Field identification & locations

Identify by its characteristic green shimmer (aventurescence) caused by light reflecting off platey mineral inclusions. Commonly found in India, Brazil, Russia, and Austria. Unlike glass, it will feel cool to the touch and scratch common metal.