sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Hardness of 6.5-7 on the Mohs scale, deep red to brownish-red color, vitreous to dull luster, and conchoidal fracture with no cleavage.

Identified October 30, 2026More sedimentary →

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Physical properties

Hardness of 6.5-7 on the Mohs scale, deep red to brownish-red color, vitreous to dull luster, and conchoidal fracture with no cleavage.

Formed through the hydrothermal deposition or silica-rich precipitation in marine environments, often dating back to the Precambrian era.

Commonly used for ornamental carvings, polished cabochons in jewelry, and as a popular specimen for mineral collectors.

Red jasper has been used since ancient times for talismans, seals, and weaponry components due to its toughness and striking color.

Identified by its opaque deep red color and waxy luster; found worldwide, particularly in India, Brazil, Russia, and the United States.

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)