metamorphic

Green Aventurine

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

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Pale to dark green; Luster: Vitreous to waxy; Crystal Structure: Trigonal (massive form); Cleavage: None; Specific Gravity: 2.64-2.69. It displays 'aventurescence,' a shimmering effect caused by micaceous inclusions.

Hardness: 6
Color: Pale to dark green
Luster: Vitreous to waxy

Identified July 14, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed as a metamorphic rock, specifically a quartzite, where high pressure and temperature cause quartz grains to recrystallize. The green color is derived from tiny platelike inclusions of green fuchsite mica within the quartz matrix.

Uses & applications

Primarily used in jewelry for cabochons, beads, and carvings. Also popular in the lapidary arts, home decor (vases, bookends), and highly valued in the metaphysical community as a 'stone of opportunity.'

Geological facts

The name Aventurine comes from the Italian 'a ventura,' meaning 'by chance.' This refers to the accidental discovery of 'aventurine glass' or 'goldstone' in the 18th century, which looks similar to this natural stone.

Field identification & locations

Identify by its characteristic green color and internal shimmering flakes (aventurescence). Found commonly in India, Brazil, and Russia. Collectors should look for specimens with a high concentration of inclusions for the best color intensity.