Green Aventurine

Physical Properties

Hardness: 7 Mohs scale; Color: Green (ranging from light to dark), often with a shimmering effect (aventurescence); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.64-2.69

Formation & Geological History

Formed as a result of the metamorphism of sandstone into quartzite, where mica flakes (Fuchsite) become trapped within the quartz matrix. Most deposits are millions of years old, found in metamorphic terrains.

Uses & Applications

Commonly used in jewelry (beads, cabochons), carving, decorative figurines, and as a popular stone in the 'healing crystals' market.

Geological Facts

The name 'Aventurine' comes from the Italian 'a ventura,' meaning 'by chance,' originally referring to the accidental discovery of aventurine glass (goldstone) in the 18th century, which looks similar.

Field Identification & Locations

Identify by its green color and the sparkly, metallic glints inside the stone when moved under light (aventurescence). Commonly found in India, Brazil, and Russia. It feels cool to the touch and can scratch glass.

Identified on: 5/2/2026

Mode: Standard