sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, green coloration due to iron impurities, waxy to dull luster, cryptocrystalline structure, conchoidal fracture with no true cleavage.
Identified More sedimentary →
Explore Green 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, green coloration due to iron impurities, waxy to dull luster, cryptocrystalline structure, conchoidal fracture with no true cleavage.
Formation & geological history
Forms from silica-rich fluids precipitating in sedimentary environments or hydrothermal veins, often over millions of years.
Uses & applications
Used for ornamental carvings, cabochons, lapidary art, and metaphysical purposes.
Geological facts
Jasper has been used since ancient times for talismans, seals, and jewelry by various civilizations including the Greeks, Romans, and Egyptians.
Field identification & locations
Found worldwide in riverbeds and mountainous regions. Identified easily by its hardness, opacity, and smooth, weathered appearance.
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