sedimentary

Red Jasper

Microcrystalline Quartz (SiO2) with Hematite impurities

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs), Color: Brick red to brownish-red, Luster: Dull or waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None (Conchoidal fracture), SG: 2.58-2.91

Hardness: 6

Identified July 19, 2026More sedimentary →

Explore Red Jasper in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6.5-7 (Mohs), Color: Brick red to brownish-red, Luster: Dull or waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None (Conchoidal fracture), SG: 2.58-2.91

Formation & geological history

Formed when fine silica-rich materials were deposited as sediment or in hydrothermal veins, with high iron oxide (hematite) content providing the red pigment. Commonly found in Mesozoic or Paleozoic geological layers.

Uses & applications

Used extensively in jewelry for cabochons and beads, ornamental carvings, lapidary art, and as a healing stone in metaphysical communities.

Geological facts

Red Jasper is known as a stone of endurance. Its color is essentially due to rusted iron within the quartz structure. It was highly prized in the ancient world for its supposed protective qualities.

Field identification & locations

Identify by its deep red color, high hardness (cannot be scratched by a steel nail), and smooth, non-porous surface. Commonly found in riverbeds, desert washes, and near volcanic areas globally.