sedimentary

Red Jasper (with Hematite inclusions)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Deep red, maroon, with yellow/black streaks; Luster: Dull to vitreous; Crystal Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.58–2.91

Hardness: 6
Color: Deep red, maroon, with yellow/black streaks
Luster: Dull to vitreous

Identified June 28, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Deep red, maroon, with yellow/black streaks; Luster: Dull to vitreous; Crystal Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.58–2.91

Formation & geological history

Formed through the infiltration and precipitation of silica in volcanic or sedimentary environments, often occurring as nodules or in cracks. The red color is caused by the oxidation of iron (hematite) during formation.

Uses & applications

Used primarily for lapidary work, jewelry (cabs, beads), healing stones, and decorative garden rock.

Geological facts

Jasper has been used since ancient times for amulets and carvings. It is known as the 'supreme nurturer' in metaphysical circles. Many huge deposits are found in Precambrian banded iron formations.

Field identification & locations

Identify by its hardness (cannot be scratched by a steel knife), opaque red appearance, and conchoidal fracture. Found worldwide, notably in the USA (Oregon, California), Brazil, and South Africa.