Rock Identifier
Jasper (SiO2 (Silicon Dioxide)) — mineral
mineral

Jasper

SiO2 (Silicon Dioxide)

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale. Color: Orange, brown, yellow. Luster: Waxy to dull. Crystal structure: Microcrystalline quartz. Cleavage: None. Specific gravity: 2.5-2.9

Hardness
6
Color
Orange, brown, yellow
Luster
Waxy to dull
Identified More mineral →
Explore Jasper in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App StoreGoogle Play

Physical properties

Hardness: 6.5-7 on Mohs scale. Color: Orange, brown, yellow. Luster: Waxy to dull. Crystal structure: Microcrystalline quartz. Cleavage: None. Specific gravity: 2.5-2.9

Formation & geological history

Formed from silica-rich fluids that seep into cracks and cavities in rocks, eventually crystallizing into chalcedony. The vibrant colors come from mineral impurities like iron oxides.

Uses & applications

Often used as a gemstone in jewelry, for decorative carving, and as a tumbling stone for collectors.

Geological facts

Jasper is a variety of chalcedony, an opaque form of microcrystalline quartz. The name means 'spotted or speckled stone' in Old French.

Field identification & locations

Identified by its opacity, hardness, and conchoidal fracture. Often found in riverbeds or as loose stones.

More like this

Other mineral specimens

Gneiss or Schist (Gneiss or Mica Schist with Garnet) — Metamorphic

Gneiss or Schist

Gneiss or Mica Schist with Garnet

Metamorphic
Sandstone (with potential mineral staining/concretions) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary
Calcite–fluorite mineral specimen with iron-oxide staining (Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides) — mineral

Calcite–fluorite mineral specimen with iron-oxide staining

Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides

mineral
Mineral Sand (Heavy Mineral Sand Concentrate) (Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite) — mineral

Mineral Sand (Heavy Mineral Sand Concentrate)

Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite

mineral
Septarian Pebble (Septarian nodule / Concretion) — sedimentary

Septarian Pebble

Septarian nodule / Concretion

sedimentary
Granite (Granite (Phaneritic intrusive igneous rock)) — igneous

Granite

Granite (Phaneritic intrusive igneous rock)

igneous