sedimentary
Green Jasper
Microcrystalline Quartz (SiO2)
Hardness of 6.5 to 7 on the Mohs scale, green coloration due to iron impurities, waxy to dull luster, cryptocrystalline or microcrystalline crystal structure, conchoidal fracture, specific gravity of 2.58 to 2.91.
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 or microcrystalline crystal structure, conchoidal fracture, specific gravity of 2.58 to 2.91.
Formation & geological history
Formed via the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often taking place over millions of years.
Uses & applications
Commonly used for ornamental carvings, cabochons in jewelry, tumbling, and as a decorative stone for collectors.
Geological facts
Jasper has been used since ancient times to create seals, talismans, and jewelry. Green varieties are frequently associated with nature and renewal.
Field identification & locations
Easily identified in the field by its hardness (scratches glass), conchoidal fracture, and opaque green color. Found worldwide in riverbeds and mountainous regions.
More like this
Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
fossil
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Banded Siltstone / Mudstone Pebble
Siltstone / Argillite
sedimentary