sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various colors including green, red, brown, and yellow, trigonal crystal system with a microcrystalline structure, and a specific gravity of 2.58 to 2.91.
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, various colors including green, red, brown, and yellow, trigonal crystal system with a microcrystalline structure, and a specific gravity of 2.58 to 2.91.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, where silica-rich fluids replace original material or fill cavities, occurring across various geological ages.
Uses & applications
Used in ornamental objects, cabochons, jewelry, carvings, and as a popular specimen for mineral collectors.
Geological facts
Jasper has been used since ancient times for seals, talismans, and jewelry, with mentions in various historical texts spanning thousands of years.
Field identification & locations
Can be identified in the field by its opacity, conchoidal fracture, waxy luster, and diverse coloration. Commonly found in riverbeds, mountainous regions, and sedimentary deposits worldwide.
More like this
Other sedimentary specimens
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Sandstone
Arenite
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary