sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, red to brown or multicolored, waxy to dull luster, and conchoidal fracture.
Identified More sedimentary →
Explore Jasper in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6.5 to 7 on the Mohs scale, red to brown or multicolored, waxy to dull luster, and conchoidal fracture.
Formation & geological history
Formed from silica-rich sediments or volcanic ash precipitation in marine or terrestrial environments.
Uses & applications
Used primarily for ornamental carvings, cabochons, jewelry, and decorative landscaping stone.
Geological facts
Jasper has been used since ancient times for seals, talismans, and weaponry due to its toughness and fracture properties.
Field identification & locations
Identify by its opacity, hardness, and smooth microcrystalline texture, commonly found in riverbeds and ancient alluvial deposits.
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