sedimentary
Jasper
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and usually exhibits red, brown, yellow, or green colors due to iron impurities.
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, opaque luster, microcrystalline quartz structure, and usually exhibits red, brown, yellow, or green colors due to iron impurities.
Formation & geological history
Formed through the accumulation of silica-rich sediments or volcanic ash, often precipitated from marine waters over millions of years.
Uses & applications
Commonly used for making decorative objects, cabochons, carved figurines, and jewelry.
Geological facts
Jasper has been used since ancient times for seals, signet rings, and talismans by various civilizations including the Minoans and Egyptians.
Field identification & locations
Identified by its dense, opaque nature and conchoidal fracture, frequently found in riverbeds and ancient 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
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone
Arenite
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary