sedimentary

Polished Jasper Sphere

Silicon Dioxide (SiO2) with iron and other mineral inclusions

Hardness: 6.5-7 (Mohs). Color: Earthy tones (brown, tan, ochre, cream). Luster: Vitreous to waxy when polished. Crystal structure: Trigonal (microcrystalline/cryptocrystalline). Opaque with swirling patterns.

Hardness: 6
Color: Earthy tones (brown, tan, ochre, cream)
Luster: Vitreous to waxy when polished

Identified July 20, 2026More sedimentary →

Explore Polished Jasper Sphere in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Formation & geological history

Formed from the deposition of silica from water or volcanic ash within cracks and cavities of other rocks. Over time, silica-rich solutions percolate and crystallize, incorporating iron oxides and clay minerals which provide the coloration.

Uses & applications

Primarily used for decorative purposes, meditation aids (scrying/grounding), metaphysical collecting, and jewelry lapidary work.

Geological facts

Jasper is a variety of chalcedony. The name comes from the Greek word 'iaspis', meaning 'spotted stone'. It is known for its ability to hold a high polish and its incredible diversity of patterns.

Field identification & locations

Identify in the field by its opacity (unlike translucent agate) and extreme hardness; it will easily scratch glass. Commonly found in desert environments, riverbeds, and volcanic regions globally (notably India, Madagascar, and USA).

Other sedimentary specimens

See all

Sandstone or Siltstone

Arenite (if sandstone)

Sedimentary

Sedimentary Sandstone

Arenite (Sedimentary Rock)

sedimentary

Fossiliferous Concretion

Septarian Concretion containing Brachiopods/Crinoids

fossil

Shale

Shale (clastic sedimentary rock)

sedimentary

Brown Sandstone (River Rock)

Arenite

sedimentary

Shale

Argillaceous sedimentary rock

sedimentary