mineral

Green Aventurine

Silicon dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Hardness: 6.5-7 on Mohs scale; Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal Structure: Trigonal (hexagonal); Cleavage: None; Specific Gravity: 2.64-2.69

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

Identified July 21, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal Structure: Trigonal (hexagonal); Cleavage: None; Specific Gravity: 2.64-2.69

Formation & geological history

Formed in igneous and metamorphic rocks through the crystallization of silica-rich solutions. The green color and 'aventurescence' (shimmer) are caused by tiny inclusions of green chrome-mica known as fuchsite.

Uses & applications

Commonly used for jewelry (cabochons, beads), decorative carvings, polished stones for metaphysical collecting, and occasionally as a facing stone in construction.

Geological facts

Green aventurine is known as the 'Stone of Opportunity.' It is often mistaken for jade, but its characteristic internal shimmer (aventurescence) distinguishes it from real jadeite or nephrite.

Field identification & locations

Look for a grainy quartz texture with internal sparkly glitter-like inclusions. It is frequently found in India, Brazil, Russia, and Tanzania. Collectors often find it as tumbled or water-worn stones.

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Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

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