Mineral
Jasper
Silicon dioxide, SiO2
Hardness: 6.5-7 (Mohs scale), Color: Brown, red, yellow, or green, Luster: Vitreous to dull, Crystal structure: Microcrystalline, Cleavage: None, Specific gravity: 2.5-2.9
- Hardness
- 6
Identified More mineral →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Brown, red, yellow, or green, Luster: Vitreous to dull, Crystal structure: Microcrystalline, Cleavage: None, Specific gravity: 2.5-2.9
Formation & geological history
Formed from silica-rich fluids that percolate through cracks in rocks, often in volcanic or sedimentary environments.
Uses & applications
Used in jewelry, decorative items, and as a collector's stone.
Geological facts
Jasper is an opaque variety of chalcedony. It gets its color from iron inclusions.
Field identification & locations
Identified by its opacity, hardness, and a wide variety of colors and patterns. Commonly found worldwide.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Biotite Schist (Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]) — metamorphic](https://media.rock.id/9ca564b5-bc87-402b-965a-69b21f9aa6bf-thumbnail.jpg)
Biotite Schist
Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]
metamorphic