sedimentary

Red Jasper

Jasper (Silicon Dioxide with Hematite inclusions), SiO2

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Deep opaque red to reddish-brown; Luster: Vitreous to waxy; Crystal structure: Trigonal (microcrystalline); Cleavage: None (Conchoidal fracture); Specific gravity: 2.58-2.91.

Hardness: 6
Color: Deep opaque red to reddish-brown
Luster: Vitreous to waxy

Identified April 13, 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

Formation & geological history

Formed through the deposition of silica from hydrothermal solutions or in sedimentary environments. Its red color is derived from iron (hematite) inclusions incorporated during the silicification process.

Uses & applications

Commonly used in jewelry (cabochons, beads), decorative carvings, lapidary art, and as a popular healing stone in metaphysical communities.

Geological facts

Jasper has been used as a gemstone since antiquity; it was mentioned in the Bible and used by ancient Egyptians for amulets. It is an opaque variety of chalcedony.

Field identification & locations

Identify by its rich red color, opacity (it does not transmit light even on thin edges), and its ability to scratch glass. Commonly found in India, Brazil, Madagascar, and the USA.