sedimentary

Red Jasper

Jasper (variety of Chert) - SiO2

Hardness: 6.5-7 (Mohs scale); Color: Red, brown, earthy yellow-red; Luster: Vitreous to dull; Crystal structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific gravity: 2.58-2.91

Hardness: 6
Color: Red, brown, earthy yellow-red
Luster: Vitreous to dull

Identified July 20, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed during the deposition of silica-rich sediments or the replacement of other materials by silica in hydrothermal environments. Its red color is derived from iron (hematite) inclusions. Usually associated with volcanic regions or sedimentary basins.

Uses & applications

Commonly used as a gemstone in jewelry, beads, cabochons, and decorative carvings. Historically used for talismans and tools.

Geological facts

Red Jasper is known as a stone of endurance and was referred to as the 'blood of Mother Earth' in ancient cultures. It has a high silica content making it very durable.

Field identification & locations

Identified by its opaque nature, red to brownish-red color, and smooth conchoidal fracture. Often found as rounded pebbles in riverbeds or integrated into larger rock formations in mountainous regions.