sedimentary

Red Jasper with Quartz Veins

Microcrystalline Quartz (SiO2) with Ferric Oxide (Fe2O3) inclusions

Hardness: 6.5-7 on Mohs scale; Color: Maroon/Brick red with white to tan veins; Luster: Dull to waxy; Structure: Microcrystalline/Cryptocrystalline; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.58-2.91

Hardness: 6
Color: Maroon/Brick red with white to tan veins
Luster: Dull to waxy

Identified June 10, 2026More sedimentary →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Formed via the deposition of silica-rich sediments or volcanic ash where iron impurities provide the red pigmentation. The white quartz veins formed later through hydrothermal processes, where silica-saturated water filled fractures in the existing rock and crystallized.

Uses & applications

Used primarily for lapidary work including cabochons, beads, and stone carvings. Also popular in landscaping and as decorative 'pocket stones' or collector specimens.

Geological facts

Red Jasper has been used since ancient times for amulets and seals. It is often referred to as a 'stone of endurance.' The white veins seen here create a variety often called 'Zebra Jasper' or simply 'Veined Jasper'.

Field identification & locations

Identify in the field by its deep red color, hardness (it will scratch glass but cannot be scratched by a steel knife), and smooth, water-worn texture if found near riverbeds. Common in areas with ancient volcanic or sedimentary activity.

Other sedimentary specimens

See all

Sandstone or Siltstone

Arenite (if sandstone)

Sedimentary

Sandstone

Arenite (primarily SiO2)

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

sedimentary