Fancy Jasper

Physical Properties

Hardness (Mohs scale): 6.5-7, Color: Multi-colored bands (red, green, grey, purple), Luster: Vitreous to waxy, Crystal structure: Trigonal (Microcrystalline), Cleavage: None, Specific Gravity: 2.58-2.91

Formation & Geological History

Formed via the deposition of silica from water or hydrothermal solutions into volcanic cavities or sedimentary crack filling. Color variations are due to mineral impurities like iron (red) and chlorite (green).

Uses & Applications

Primarily used for decorative purposes, cabochons in jewelry, tumbling, and metaphysical practices.

Geological Facts

Jasper is an opaque variety of chalcedony. The name 'Jasper' is derived from the Greek word 'iaspis', meaning 'spotted stone.'

Field Identification & Locations

Look for a smooth, waxy surface and opaque opacity. Found globally, with significant deposits in India, Brazil, and the USA. It will not scratch with a steel knife.

Identified on: 4/23/2026

Mode: Standard