mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Hardness: 6.5-7.0 (Mohs scale), Color: Rusty red to reddish-brown, Luster: Vitreous to dull, Crystal structure: Trigonal/Microcrystalline, Cleavage: None (conchoidal fracture), Specific gravity: 2.58-2.91

Hardness: 6

Identified March 30, 2026More mineral →

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Physical properties

Formation & geological history

Formed from the deposition of silica-rich fluids in volcanic or sedimentary environments, often occurring near hydrothermal veins. The red color is derived from iron impurities during formation. This specimen is a water-worn river pebble, polished by natural erosion.

Uses & applications

Predominantly used as a gemstone for jewelry, lapidary work (cabbing), decorative carvings, and as a popular specimen for collectors and holistic practitioners.

Geological facts

Jasper is an opaque variety of chalcedony. In ancient times, it was known as the 'rain bringer' and was used in protective amulets by various cultures including the Egyptians and Native Americans.

Field identification & locations

Identify in the field by its opacity (it will not let light through even at thin edges) and its smooth, waxy texture when weathered. Commonly found in riverbeds and ancient coastal deposits. It can be found globally with significant deposits in India, Brazil, and the USA.

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