Green Jasper

Physical Properties

Hardness: 6.5-7 (Mohs scale), Color: Opaque green with dark inclusions, Luster: Vitreous to waxy, Crystal Structure: Microcrystalline/Cryptocrystalline, Specific Gravity: 2.6-2.9.

Formation & Geological History

Formed through the deposition of silica-rich fluids in volcanic or sedimentary environments. It is a dense, impure variety of silica that often replaces organic material or fills cavities over millions of years.

Uses & Applications

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

Geological Facts

Jasper is a significant historical stone mentioned in many ancient texts. The name is derived from the Greek word 'iaspis', meaning 'spotted stone.' Green jasper was highly prized in the ancient world for its supposed abilities to bring rain.

Field Identification & Locations

Identify in the field by its opacity (unlike translucent chrysoprase), smooth waxy feel when polished, and extreme hardness—it will scratch glass and cannot be scratched by a steel knife. Commonly found in riverbeds or coastal areas in Oregon, India, and Australia.

Identified on: 4/13/2026

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