sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Hardness: 6.5-7 on the Mohs scale. Color: Brick red to deep terracotta, often with dark banding or veining. Luster: Vitreous to waxy when polished. Crystal Structure: Microcrystalline/Cryptocrystalline quartz. Cleavage: None, exhibits conchoidal fracture.

Hardness: 6
Luster: Vitreous to waxy when polished

Identified July 24, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed when silica-rich fluid precipitates in volcanic sedimentary environments or hydrothermal veins. The distinct red pigmentation is caused by embedded micro-particles of hematite (iron oxide).

Uses & applications

Widely used in lapidary arts, tumbled stones, jewelry, carvings, beads, and ornamental items. Highly popular among rock collectors and practitioners of crystal healing.

Geological facts

Red jasper was highly prized in the ancient world, often carved into seals, amulets, and ring stones in ancient Egypt, Greece, and Rome. It is often associated with physical strength and grounding energy.

Field identification & locations

Identified by its rich opaque red color, hardness that resists steel pocket knives, and smooth waxy polish. Commonly found worldwide, including in Brazil, South Africa, India, Russia, and the western United States.

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