Green Aventurine

Physical Properties

Hardness: 7 (Mohs); Color: Translucent green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (aggregate); Cleavage: None (conchoidal fracture); Specific gravity: 2.64-2.69; Often shows 'aventurescence' (a metallic glitter).

Formation & Geological History

Formed as a metamorphic rock (Quartzite) from quartz-rich sandstone subjected to high heat and pressure, with the inclusion of chromium-rich Fuchsite mica which provides the green color.

Uses & Applications

Used primarily in lapidary work, jewelry (beads, cabochons), carvings, and as a popular stone for crystal healing and decorative ornamentation.

Geological Facts

The name 'Aventurine' comes from the Italian word 'a ventura', meaning 'by chance,' originally referring to the accidental discovery of aventurine glass (goldstone) in the 18th century. Unlike other quartz, it is characterized by platy mineral inclusions that create a shimmering effect.

Field Identification & Locations

Identify by its green color and shimmering mica inclusions. It is harder than glass and lacks the layering of many other green stones like jadeite or nephrite. Commonly found in India, Brazil, and Russia.

Identified on: 4/14/2026

Mode: Standard