mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Hardness: 6.5-7 on Mohs scale; Color: Green (due to Chromium-rich Fuchsite mica); Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.64-2.69.

Hardness: 6
Color: Green (due to Chromium-rich Fuchsite mica)
Luster: Vitreous to waxy

Identified May 23, 2026More mineral →

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Physical properties

Formation & geological history

Formed in metamorphic rocks and pegmatites. The characteristic green color and 'aventurescence' (shimmer) occur when Chromium-rich mica is trapped within the quartz during crystallization. Main deposits are millions of years old.

Uses & applications

Widely used for ornamental carvings, tumble-polished stones for collectors, beads, and jewelry. It is also a popular stone in metaphysical circles.

Geological facts

The shimmering effect is called aventurescence. Its name comes from the Italian 'a ventura', meaning 'by chance', originally referring to accidental 18th-century glass production that resembled the stone.

Field identification & locations

Identify by its translucent to opaque body and the presence of tiny internal shimmering flakes (aventurescence). Found commonly in India, Brazil, and Russia. It can be distinguished from jade by its lower toughness and shimmering inclusions.

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