Green Aventurine

Physical Properties

Hardness: 7 on Mohs scale; Color: Translucent to opaque light green; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.64-2.69

Formation & Geological History

Forms in igneous rocks like pegmatites or in metamorphic environments where quartz undergoes recrystallization while containing platy mineral inclusions like mica.

Uses & Applications

Mainly used for decorative carvings, cabochons for jewelry, tumbled stones for metaphysical use, and ornamental cladding.

Geological Facts

The name comes from 'a ventura,' meaning 'by chance,' originally referring to an 18th-century Italian glass manufacturing mistake that resembled the stone's glittering appearance.

Field Identification & Locations

Identify by its 'aventurescence,' a shimmering or glistening effect caused by light reflecting off tiny platy inclusions inside the quartz. Commonly found in India, Brazil, and Russia.

Identified on: 5/2/2026

Mode: Standard