sedimentary

Red Jasper

Microcrystalline Quartz (SiO2) with Hematite impurities

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Brick red to brownish-red; Luster: Vitreous to waxy (when wet/polished); Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91

Hardness: 6
Color: Brick red to brownish-red
Luster: Vitreous to waxy (when wet/polished)

Identified May 9, 2026More sedimentary →

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Physical properties

Formation & geological history

Jasper forms from the deposition of silica from thermal waters or via the replacement of organic materials. The red color is derived from high concentrations of iron oxide (hematite). It is often found in prehistoric sedimentary beds or as nodules in volcanic rocks.

Uses & applications

Primary use in lapidary work for jewelry, cabochons, and decorative carvings. Historically used for seal stones and ritual tools. Minor uses in high-end construction as decorative inlay.

Geological facts

Red Jasper is known as the 'Stone of Endurance' in metaphysical circles. In ancient times, it was used by warriors for protection and was mentioned in various mythologies as a sacred stone.

Field identification & locations

Identify in the field by its opaque red color and smooth, shell-like (conchoidal) fracture surface. It will scratch glass but cannot be scratched by a steel blade. Commonly found in riverbeds, desert landscapes, and coastal areas globally.