mineral

Red Jasper

Quartz (Silicon Dioxide) with Hematite inclusions, SiO2

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs), Color: Opaque brick red, Luster: Dull to vitreous, Crystal structure: Trigonal (microcrystalline), Cleavage: None (conchoidal fracture), Specific Gravity: 2.58-2.91

Hardness: 6

Identified April 7, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs), Color: Opaque brick red, Luster: Dull to vitreous, Crystal structure: Trigonal (microcrystalline), Cleavage: None (conchoidal fracture), Specific Gravity: 2.58-2.91

Formation & geological history

Formed in sedimentary or hydrothermal environments where silica-rich fluids permeate cracks or replace organic material; the red color is caused by fine inclusions of iron oxide (hematite).

Uses & applications

Used extensively in jewelry (cabochons, beads), decorative lapidary arts, and as a popular stone for mineral collectors and metaphysical practitioners.

Geological facts

Red Jasper is known as the 'Stone of Endurance' and has been used since ancient times for amulets and carvings. It is a dense, opaque variety of chalcedony.

Field identification & locations

Identified by its distinctive deep red color, high hardness (cannot be scratched by steel), and smooth conchoidal fracture. Common in locations like the western USA, Brazil, South Africa, and India.