Sedimentary/Mineral
Jasper
Cryptocrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness 6.5-7, opaque, various colors often with patterns, vitreous to dull luster, cryptocrystalline, conchoidal fracture
Identified More sedimentary/mineral →
Explore Jasper in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness 6.5-7, opaque, various colors often with patterns, vitreous to dull luster, cryptocrystalline, conchoidal fracture
Formation & geological history
Formed from silica-rich sedimentary environments or volcanic ash deposits, often with impurities like iron oxide creating patterns.
Uses & applications
Commonly used in lapidary, jewelry making, ornamental objects, and crystal healing.
Geological facts
The specific pattern on this piece is often called 'orbicular' or 'poppy' jasper due to the spotty inclusions. Jasper is an aggregate of microgranular quartz and/or chalcedony.
Field identification & locations
Identified by its opacity, hardness (can scratch glass), and characteristic patterns. Found worldwide, often in areas with volcanic history.
More like this
Other sedimentary/mineral specimens
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
fossil
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
sedimentary
Banded Sedimentary Rock
Sedimentary rock with mineral veins/banding
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary