mineral

Red Jasper

Quartz (Silicon Dioxide) with Hematite inclusions, SiO2 + Fe2O3

Hardness: 6.5-7 (Mohs); Color: Deep red to brownish-red; Luster: Vitreous to waxy (when wet/polished); Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture)

Hardness: 6
Color: Deep red to brownish-red
Luster: Vitreous to waxy (when wet/polished)

Identified June 18, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Deep red to brownish-red; Luster: Vitreous to waxy (when wet/polished); Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture)

Formation & geological history

Formed through the accumulation of silica in volcanic or sedimentary environments, often associated with iron-rich hydrothermal fluids or oxidation processes. It is frequently found as pebbles in stream beds or glacial till.

Uses & applications

Commonly used in lapidary arts for cabochons, beads, and decorative carvings. Historically used for seals, jewelry, and as a 'healing stone' in metaphysical practices.

Geological facts

Red Jasper gets its distinct color from high concentrations of iron oxide (hematite). It has been used for thousands of years, appearing in the cultures of the Aztecs, Greeks, and Egyptians.

Field identification & locations

Identify in the field by its opaque deep red color, hardness (it will scratch glass), and lack of light transmission even on thin edges. Common across North America, especially in the Great Lakes region and Western US.

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mineral