sedimentary

Red and White Jasper

Microcrystalline Quartz (SiO2)

Hardness of 6.5 to 7 on the Mohs scale, red and white coloration, waxy luster, and conchoidal fracture.

Identified October 17, 2026More sedimentary →

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

Physical properties

Hardness of 6.5 to 7 on the Mohs scale, red and white coloration, waxy luster, and conchoidal fracture.

Formed through the silification of sedimentary deposits or volcanic ash, often occurring in ancient marine environments.

Commonly used for lapidary work, ornamental carvings, polished cabochons, and gemstone collecting.

Jasper has been used since ancient times for amulets, seals, and tools due to its toughness and ability to take a high polish.

Identify by its opaque nature, hardness, and distinct red-and-white color patterns; found globally in riverbeds and mountainous regions.

Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion

Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Sandstone or Siltstone

Arenite (if sandstone)

Sandstone

Arenite

Shale

Shale (clastic sedimentary rock)

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)