mineral

Green Aventurine

Aventurine Quartz (SiO2)

Hardness: 6.5-7 (Mohs); Color: Pale to deep green with shimmering specks; Luster: Vitreous to waxy; Structure: Hexagonal (trigonal); Cleavage: None; Specific Gravity: 2.64-2.69

Hardness: 6
Color: Pale to deep green with shimmering specks
Luster: Vitreous to waxy

Identified March 6, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Pale to deep green with shimmering specks; Luster: Vitreous to waxy; Structure: Hexagonal (trigonal); Cleavage: None; Specific Gravity: 2.64-2.69

Formation & geological history

Formed in magmatic and metamorphic environments where quartz-rich liquids cool and crystallize, mineralizing with Fuchsite inclusions which provide the green color and shimmering 'aventurescence'.

Uses & applications

Commonly used in jewelry (cabochons, beads), decorative carvings, aquarium gravel, and within the metaphysical community as a 'stone of opportunity'.

Geological facts

The shimmering effect is called 'aventurescence,' caused by platy inclusions of green chrome-mica. Its name is derived from the Italian 'a ventura' meaning 'by chance', originally referring to aventurine glass invented in the 18th century.

Field identification & locations

Identify in the field by its distinct green hue and internal metallic glitter when rotated under light. Common locations include India, Brazil, Russia, and Tanzania. For collectors, look for high opacity and high density of mica inclusions.