Green Quartz (Prasiolite/Adventurine/Jasper)

Physical Properties

Hardness: 7 (Mohs scale), Color: Pale to deep green, Luster: Vitreous (glassy) to waxy, Crystal Structure: Hexagonal/Trigonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Formation & Geological History

Formed in hydrothermal veins, volcanic cavities, or metamorphic rocks. Most natural green quartz is associated with areas where silicon-rich fluids were present during geological shifts.

Uses & Applications

Used in gemstone production for jewelry (rings, pendants), as decorative ornamental stones, and highly valued by mineral collectors and 'crystal healing' practitioners.

Geological Facts

Natural green quartz (Prasiolite) is extremely rare in nature; most commercial green quartz is produced by heat-treating amethyst. Green quartz with inclusions is often called Aventurine.

Field Identification & Locations

Identify by its ability to scratch glass (hardness 7) and its characteristic conchoidal (shell-like) fracture. Commonly found in Brazil, Russia, and portions of the USA like Arizona.

Identified on: 4/17/2026

Mode: Standard