sedimentary

Red Jasper (Tumbled)

Silicon Dioxide (SiO2)

Hardness: 6.5-7 (Mohs scale), Color: Deep brick red to brownish red, Luster: Vitreous to waxy, Crystal structure: Microcrystalline/Trigonal, Cleavage: None (Conchoidal fracture), Specific Gravity: 2.58-2.91

Hardness: 6

Identified May 25, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the infiltration of silica-rich fluids into volcanic ash or fine-grained sediments during diagenesis. The red color is caused by the inclusion of iron oxide (hematite) during the formation process.

Uses & applications

Commonly used in jewelry such as bracelets and pendants, for lapidary work, decorative landscaping, and as a popular stone for chakra healing and crystal collecting.

Geological facts

Red Jasper was known as the 'warrior stone' in ancient times; it was often set into sword hilts and amulets to provide protection and courage. It is an opaque variety of chalcedony.

Field identification & locations

Identify by its solid red color and high hardness (it cannot be scratched by a steel nail). Look for it in river beds or desert regions where volcanic activity once occurred. Tumbled edges indicate it has been mechanically polished.