sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) 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 (trigonal) microcrystalline quartz; Specific gravity: 2.58-2.91

Hardness: 6
Color: Brick red to brownish-red
Luster: Dull to vitreous

Identified May 3, 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 (trigonal) microcrystalline quartz; Specific gravity: 2.58-2.91

Formation & geological history

Formed from silica-rich fluids that permeate volcanic or sedimentary rocks, often enriched with iron during secondary mineralization and found in regions with ancient tectonic activity.

Uses & applications

Primarily used for lapidary work, jewelry (beads, cabochons), ornamental sculpture, and for metaphysical collections as a grounding stone.

Geological facts

Red jasper was a favorite gem in antiquity; it is mentioned in the Bible and was known as a 'warrior's stone' by Egyptians and Native Americans for its supposed strength-giving properties.

Field identification & locations

Look for a deep red color and opaque translucency; typically does not scratch with a pocketknife. Commonly found in riverbeds or gravel pits in regions like South Africa, Brazil, and the USA.