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: Dull to vitreous, Crystal structure: Hexagonal (microcrystalline), Specific gravity: 2.58-2.91

Hardness: 6

Identified July 20, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs), Color: Brick red to brownish-red, Luster: Dull to vitreous, Crystal structure: Hexagonal (microcrystalline), Specific gravity: 2.58-2.91

Formation & geological history

Formed from the deposition of silica from water-rich environments, often in hydrothermal veins or as a secondary mineral in volcanic rocks. Its red color is derived from hematite (iron) inclusions.

Uses & applications

Commonly used for lapidary work, jewelry (cabs/beads), decorative ornaments, and as a popular specimen for rock tumbling and holistic healing collections.

Geological facts

Red Jasper has been used since antiquity; it was mentioned in the Bible and used by ancient Minoans and Egyptians for seals and amulets. It is considered a stone of endurance.

Field identification & locations

Identify by its deep red color, conchoidal fracture, and inability to be scratched by a steel knife. It is frequently found in riverbeds, glacial tills, and desert pavements worldwide.