sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Hardness: 6.5-7.0 (Mohs scale); Color: Teracotta red to brownish-red; Luster: Vitreous to dull; Crystal Structure: Hexagonal (cryptocrystalline); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Teracotta red to brownish-red
Luster: Vitreous to dull

Identified July 12, 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, where iron oxide (hematite) provides the red color. Typically Proterozoic to Phanerozoic in age.

Uses & applications

Used primarily in lapidary arts for cabochons, beads, and carvings. Also used as an ornamental stone in jewelry, landscaping, and as a popular collector's mineral.

Geological facts

The name Jasper comes from the Greek word 'iaspis', meaning 'spotted stone'. In ancient times, it was believed to be the 'mother of all stones' providing protection and grounding energy.

Field identification & locations

Identify by its opaque red color and smooth, waxy feel when polished. Commonly found in riverbeds or arid regions in India, Brazil, South Africa, and the southwestern USA. It will scratch glass and not react to acid.

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