Green Aventurine

Physical Properties

Hardness: 7 Mohs; Color: Pale to medium green; Luster: Vitreous to waxy with aventurescence (shimmering effect); Crystal Structure: Hexagonal (Trigonal); Cleavage: None; Specific Gravity: 2.64-2.69

Formation & Geological History

Formed through the regional metamorphism of sandstone into quartzite, where mica crystals (usually green fuchsite) are trapped within the quartz matrix during recrystallization.

Uses & Applications

Used primarily in jewelry as beads and cabochons, ornamental carvings, aquarium decor, and as popular 'healing' stones in metaphysical practices.

Geological Facts

The name Aventurine comes from the Italian 'a ventura,' meaning 'by chance,' which originally referred to a type of shimmering glass accidentally discovered in Venice during the 18th century.

Field Identification & Locations

Identify by its characteristic green 'schiller' or shimmer caused by platy mineral inclusions. It is distinct from jade by its lower toughness and visible shimmering particles when rotated under light.

Identified on: 4/13/2026

Mode: Standard