sedimentary

Red Jasper (Brecciated)

Silicon Dioxide with Iron inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Brick red to brownish-red with dark patterns; Luster: Vitreous to waxy (especially when wet or polished); Crystal Structure: Microcrystalline/Trigonal; Specific Gravity: 2.58-2.91.

Hardness: 6
Color: Brick red to brownish-red with dark patterns
Luster: Vitreous to waxy (especially when wet or polished)

Identified June 25, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the accumulation of fine-grained silica in hydrothermal veins or sedimentary environments, often solidified from volcanic ash or silica-rich water. The red color is caused by iron oxide (hematite) impurities.

Uses & applications

Used widely for lapidary work, jewelry (beads, cabochons), metaphysical healing practices, and as decorative gravel or ornamental stone.

Geological facts

Jasper is an opaque variety of chalcedony. Historically, it was known as the 'supreme nurturer' and was worn by ancient civilizations in amulets and seals.

Field identification & locations

Identify by its hardness (cannot be scratched by a steel knife), opacity (even on thin edges), and dull to waxy luster. Commonly found in riverbeds and coastal areas.