sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Hardness: 6.5-7 (Mohs scale); Color: Rusty brick red with occasional white or black streaks; Luster: Vitreous to dull (waxy when polished); Crystal Structure: Microcrystalline Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58 - 2.91

Hardness: 6
Color: Rusty brick red with occasional white or black streaks
Luster: Vitreous to dull (waxy when polished)

Identified March 28, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the deposition of silica-rich water into the cracks and cavities of sedimentary or volcanic rocks. Its red color is derived from high iron content (Hematite). It can be found in strata ranging from Precambrian to more recent geological eras.

Uses & applications

Used primarily in lapidary work for cabochons, beads, and carvings. It is also common as decorative landscaping stone and in metaphysical collections.

Geological facts

In antiquity, Red Jasper was known as the 'stone of endurance' and was often used in the seals of ancient civilizations and the hilts of warriors' swords for protection and strength.

Field identification & locations

Identify in the field by its deep opaque red color and inability to be scratched by a steel knife. It is commonly found in riverbeds or desert regions of South Africa, Brazil, India, and the southwestern United States.

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