sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, earthy to vitreous luster, opaque appearance, 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 6.5-7 on the Mohs scale, earthy to vitreous luster, opaque appearance, and conchoidal fracture.
Formation & geological history
Formed from silica-rich fluids precipitating in sedimentary environments or volcanic fissures over millions of years.
Uses & applications
Commonly used for ornamental carvings, polished cabochons, lapidary art, and geological specimen collecting.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry due to its toughness and ability to take a high polish.
Field identification & locations
Identify by its waxy luster, opaque banding, and inability to be scratched by a steel knife; found globally in riverbeds and mountainous regions.
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