sedimentary

Red Jasper

Chalcedony (SiO2 with Iron inclusions)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Brick red to brownish red; Luster: Dull to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Hardness: 6
Color: Brick red to brownish red
Luster: Dull to waxy

Identified April 11, 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 to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Formation & geological history

Formed through the infiltration of silica-rich fluids into volcanic ash or fine-grained sediments, where the presence of iron oxide (hematite) provides the red pigmentation. It is often found in prehistoric sedimentary beds or hydrothermal veins.

Uses & applications

Used widely in ornamental crafts, jewelry (beads, cabochons), landscaping stones, and as a 'grounding' stone in metaphysical practices.

Geological facts

Jasper has been used by ancient civilizations for thousands of years; the Minoans used it for seal stones, and it is mentioned in the Bible as one of the stones in the High Priest's breastplate.

Field identification & locations

Identify it by its distinctive opaque red color, inability to be scratched by a steel knife, and smooth, waxy texture when wet. Commonly found in riverbeds and desert environments.