sedimentary
Red Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque red to brownish-red color, vitreous to dull luster, trigonal crystal system, and conchoidal fracture.
Identified More sedimentary →
Explore Red 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 red to brownish-red color, vitreous to dull luster, trigonal crystal system, and conchoidal fracture.
Formation & geological history
Formed via the precipitation of silica-rich fluids within sedimentary or volcanic environments, often accumulating in marine deposits over millions of years.
Uses & applications
Widely used for ornamental carvings, polished cabochons in jewelry, and as a popular specimen for mineral collectors.
Geological facts
Red jasper has been utilized since ancient times for amulets, seals, and weaponry, often revered across various cultures as a stone of grounding and endurance.
Field identification & locations
Easily identified in the field by its rich red color, waxy-to-dull luster, and failure to scratch with a steel knife. Commonly found in riverbeds and mountainous regions 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