sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness 6.5-7, exhibits earthy to waxy luster, opaque, displays various colors due to mineral 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
Mohs hardness 6.5-7, exhibits earthy to waxy luster, opaque, displays various colors due to mineral impurities.
Formation & geological history
Formed by the precipitation of silica-rich fluids in sedimentary or volcanic environments over millions of years.
Uses & applications
Commonly used in lapidary arts, ornamental carvings, jewelry making, and as a collector specimen.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components across many cultures.
Field identification & locations
Identified by its microcrystalline structure, lack of cleavage, conchoidal fracture, and opaque multicolor banding.
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