mineral

Green Aventurine

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

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); 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 17, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed in metamorphic environments where silica-rich fluids permeate through rocks containing mica. The signature green color and 'aventurescence' (sparkle) are caused by inclusions of green chrome-mica known as fuchsite.

Uses & applications

Commonly used for ornamental carvings, beads, cabochons for jewelry, and as a popular stone for collectors and metaphysical practitioners.

Geological facts

The name Aventurine comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to the 18th-century discovery of Goldstone (aventurine glass) before the natural mineral was named.

Field identification & locations

Identified by its distinctive grainy green color and internal sparkles when rotated under light. Often found in India, Brazil, Russia, and Tanzania. Collectors should look for a uniform green color and the presence of platy inclusions.