Green Aventurine

Physical Properties

Hardness: 7 (Mohs scale); Color: Pale to dark green with sparkly aventurescence; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69

Formation & Geological History

Formed through the metamorphism of quartz-rich sedimentary rocks (quartzite) combined with mica inclusions. Most specimens are from the Precambrian or Paleozoic eras, formed under high pressure and temperature in the Earth's crust.

Uses & Applications

Predominantly used for jewelry, lapidary carvings, decorative figurines, tumbled stones for metaphysical collecting, and occasionally as a surfacing material for high-end furniture.

Geological Facts

The name 'Aventurine' is derived from the Italian 'a ventura,' meaning 'by chance.' This refers to the 18th-century discovery of Goldstone glass, which looks similar to this natural mineral. Its signature shimmer is caused by platy inclusions of green Fuchsite mica.

Field Identification & Locations

Identify in the field by its distinct 'shimmer' or 'glitter' (aventurescence) beneath the surface, its green color, and its ability to scratch glass. It is commonly found in India, Brazil, and Russia.

Identified on: 4/13/2026

Mode: Standard