mineral

Green Aventurine

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

Hardness: 7 on Mohs scale; Color: Dull to bright green with a shimmering effect; Luster: Vitreous to waxy; Crystal structure: Hexagonal (Trigonal); Cleavage: None; Specific gravity: 2.64-2.69

Hardness: 7 on Mohs scale
Color: Dull to bright green with a shimmering effect
Luster: Vitreous to waxy

Identified March 17, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Dull to bright green with a shimmering effect; Luster: Vitreous to waxy; Crystal structure: Hexagonal (Trigonal); Cleavage: None; Specific gravity: 2.64-2.69

Formation & geological history

Formed in magmatic and metamorphic environments where quartz-rich fluids crystallize. The green color and shimmering 'aventurescence' are caused by the presence of chromium-rich mica known as fuchsite. Major deposits are found in India and Brazil.

Uses & applications

Predominantly used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and 'healing' stones. In industry, it can be used for landscaping and as an abrasive.

Geological facts

Aventurine is known for the 'aventurescence' effect, which refers to the sparkling, iridescent reflection of light from platy mineral inclusions. It is often referred to as 'The Stone of Opportunity' in metaphysical circles.

Field identification & locations

Identify by its characteristic green mottling and sub-surface sparkles. Common locations include the Bellary district in India and Minas Gerais, Brazil. Collectors should look for even color distribution and strong aventurescence.

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