sedimentary
Green Jasper Pebble
Microcrystalline Quartz (Chalcedony), SiO2
Hardness: 6.5-7 on the Mohs scale, Color: Green with minor brownish veining, Luster: Waxy to dull, Crystal Structure: Trigonal (microcrystalline/cryptocrystalline), Cleavage: None (exhibits conchoidal fracture), Specific Gravity: 2.58-2.91
- Hardness
- 6
Identified More sedimentary →
Explore Green Jasper Pebble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7 on the Mohs scale, Color: Green with minor brownish veining, Luster: Waxy to dull, Crystal Structure: Trigonal (microcrystalline/cryptocrystalline), Cleavage: None (exhibits conchoidal fracture), Specific Gravity: 2.58-2.91
Formation & geological history
Formed via the precipitation of silica-rich fluids in sedimentary environments or hydrothermal conditions, often over millions of years.
Uses & applications
Used for tumbling, lapidary arts, ornamental carving, and as a collector's specimen.
Geological facts
Green jasper gets its distinct color primarily from iron compounds, clay minerals, or other mineral impurities incorporated during its formation.
Field identification & locations
Found commonly in stream beds, gravel bars, and beaches where wave or river action has smoothed and rounded the stone. Identify by its high hardness (scratches glass) and smooth, opaque waxy texture.
More like this
Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
fossil
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Banded Siltstone / Mudstone Pebble
Siltstone / Argillite
sedimentary