sedimentary
Jasper / Quartz Pebble
Silicon Dioxide (SiO2) microcrystalline quartz
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy to dull luster, opaque to translucent, conchoidal fracture, specific gravity around 2.65.
Identified More sedimentary →
Explore Jasper / Quartz Pebble 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, waxy to dull luster, opaque to translucent, conchoidal fracture, specific gravity around 2.65.
Formation & geological history
Formed through the deposition and consolidation of silica-rich sediments or volcanic ash in marine or terrestrial environments, later weathered and water-worn into a pebble.
Uses & applications
Used in lapidary arts for making cabochons, beads, decorative carvings, and as tumbling stones.
Geological facts
Jasper is an ancient gemstone mentioned in various historical and biblical texts, prized since antiquity for seals, talismans, and ornamentation.
Field identification & locations
Identified by its microcrystalline structure, hardness capable of scratching glass, and lack of visible crystal grains. Commonly found in riverbeds, beaches, and glacial till 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