Mineral

Red Jasper

Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)

Hardness: 6.5–7 on Mohs scale. Color: Brick red to brownish-red. Luster: Dull to vitreous or waxy. Crystal Structure: Trigonal (Microcrystalline). Cleavage: None (conchoidal fracture). Specific Gravity: 2.6–2.9.

Hardness: 6
Color: Brick red to brownish-red
Luster: Dull to vitreous or waxy

Identified March 21, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the deposition of silica from water solutions or volcanic ash, which then solidifies into a microcrystalline quartz. The red color is derived from high Iron (Hematite) content during formation. Occurs in sedimentary or hydrothermal environments across various geological eras.

Uses & applications

Commonly used in jewelry (cabochons and beads), decorative carvings, lapidary arts, and as a component in spiritual or metaphysical practices. Historically used for making tools due to its sharp conchoidal fracture.

Geological facts

Red Jasper has been used since antiquity; it was a favorite in the ancient world for seals and amulets. It is often found in 'Banded Iron Formations' which date back billions of years to when the Earth's atmosphere first became oxygenated.

Field identification & locations

Identify in the field by its opaque deep red color, smooth waxy texture when broken, and extreme hardness (it will scratch glass but cannot be scratched by a steel knife). Commonly found in riverbeds or desert regions, notably in India, Brazil, USA (Southwest), and South Africa.

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