sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Brick red to brownish red; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Hardness: 6
Color: Brick red to brownish red
Luster: Vitreous to waxy

Identified May 9, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Brick red to brownish red; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica from water in cavities or volcanic environments, later enriched with iron oxides that provide the red pigment. It is a variety of chalcedony.

Uses & applications

Primarily used for lapidary work including cabochons, beads, and carvings. Also popular in jewelry and as a grounding stone in metaphysical practices.

Geological facts

The name Jasper comes from the Greek word 'iaspis', meaning spotted stone. It has been used for seals and jewelry since antiquity in Egyptian and Minoan cultures.

Field identification & locations

Identify by its deep red color, high hardness (cannot be scratched by a steel blade), and smooth, often waxy surface when polished. Found globally with major deposits in India, Russia, Brazil, and the USA.