sedimentary

Breciated Jasper

Brecciated Jasper (Silicon Dioxide, SiO2)

Hardness: 6.5-7 Mohs; Color: Brick red with white or cream inclusions; Luster: Vitreous to dull; Crystal Structure: Hexagonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Hardness: 6
Color: Brick red with white or cream inclusions
Luster: Vitreous to dull

Identified June 28, 2026More sedimentary →

Explore Breciated 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 a process of fragmentation and re-cementation. Original jasper beds are shattered by tectonic activity and then filled in or 'glued' back together by subsequent infusions of silica (quartz or chalcedony) or hematite.

Uses & applications

Primary uses are in jewelry making (cabochons, beads), decorative ornaments, and lapidary arts. It is also popular in the metaphysical community as a grounding stone.

Geological facts

The word 'brecciated' comes from the Italian word 'breccia', meaning 'broken stones'. The red color is typically caused by high iron oxide (hematite) content within the stone.

Field identification & locations

Identifiable by its 'broken' appearance where angular fragments of red jasper are held together by a lighter-colored matrix. Commonly found in desert environments or areas with ancient tectonic activity. Collectors should look for sharp color contrast between the clasts and the matrix.

Other sedimentary specimens

See all

Sandstone or Siltstone

Arenite (if sandstone)

Sedimentary

Cone-in-cone structure (Limestone)

Cone-in-cone structure (Secondary Sedimentary Structure)

sedimentary

Chert Breccia

Brecciated Chert (Microcrystalline Silica)

sedimentary

Sandstone Grain

Clastic Sedimentary Rock Grain (SiO2 dominated)

sedimentary

Shale or Slaty Mudstone

Argillaceous sedimentary rock

sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary