Green Jasper

Physical Properties

Hardness: 6.5-7 (Mohs), Color: Pale to deep green with possible banding, Luster: Vitreous to waxy (when polished), Crystal structure: Hexagonal (microcrystalline), Cleavage: None, Fracture: Conchoidal.

Formation & Geological History

Formed primarily from the deposition of silica from water containing impurities. It often forms in volcanic environments or in sedimentary beds where silica-rich fluids permeate porous rock or ash.

Uses & Applications

Commonly used for lapidary work, cabochons, jewelry, decorative ornaments, and as a popular pocket stone for collectors.

Geological Facts

Green Jasper was considered a powerful 'rain bringer' in ancient civilizations. Unlike Green Aventurine, it lacks the 'aventurescence' (sparkling effect) and has a more solid, opaque to translucent waxy look.

Field Identification & Locations

Identified in the field by its hardness (will scratch glass), smooth conchoidal fracture, and lack of transparency. Common in riverbeds or coastal areas where volcanic activity occurred.

Identified on: 5/16/2026

Mode: Standard