sedimentary

Red Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale), Color: Red to brownish-red, Luster: Vitreous to dull, Crystal structure: Trigonal/Microcrystalline, Cleavage: None (conchoidal fracture)

Hardness: 6

Identified May 8, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: Red to brownish-red, Luster: Vitreous to dull, Crystal structure: Trigonal/Microcrystalline, Cleavage: None (conchoidal fracture)

Formation & geological history

Formed through the infiltration of silica-rich fluids into volcanic ash or fine-grained sediments, with its red color derived from iron oxide (hematite) impurities during the silicification process.

Uses & applications

Used primarily in lapidary arts for jewelry, belt buckles, decorative carvings, and as a popular focus for meditation and metaphysical collections.

Geological facts

Jasper is a variety of chalcedony. Historically, it was known as the 'supreme nurturer' and has been used by various cultures for talismans and decorative inlay work for thousands of years.

Field identification & locations

Identify by its deep opaque red color and high hardness (it cannot be scratched by a steel knife). Commonly found in riverbeds or near volcanic deposits in locations like India, Brazil, and the Southwestern US.