sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7, opaque brick-red or brownish-red color, waxy luster, and conchoidal fracture.
Identified More sedimentary →
Explore Red Jasper in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Mohs hardness of 6.5 to 7, opaque brick-red or brownish-red color, waxy luster, and conchoidal fracture.
Formation & geological history
Formed from silica-rich precipitation in marine environments and hydrothermal settings, often dating to the Precambrian era.
Uses & applications
Used widely in ornamental carvings, cabochons, polished tumbling stones, and metaphysical collections.
Geological facts
Red jasper is colored primarily by iron oxide inclusions and has been used since antiquity for talismans and seals.
Field identification & locations
Identified by its deep red color, lack of cleavage, and high hardness that scratches glass. Common in river beds and hydrothermal veins worldwide.
More like this
Other sedimentary specimens
Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion
Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image
fossil
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary