sedimentary

Red Jasper

Silicon Dioxide with Iron inclusions (SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Red to brownish-red; Luster: Vitreous to dull; Crystal structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Red to brownish-red
Luster: Vitreous to dull

Identified June 19, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Red to brownish-red; Luster: Vitreous to dull; Crystal structure: Trigonal (microcrystalline); Cleavage: None; Specific Gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica from water-rich environments, often in hydrothermal veins or as nodules in volcanic rocks. Its red color is derived from high iron content during its formation process over millions of years.

Uses & applications

Commonly used in jewelry (cabochons, beads), decorative carvings, lapidary arts, and as a popular gemstone for collectors and metaphysical enthusiasts.

Geological facts

Jasper has been used as a gemstone since antiquity; it was mentioned in the Bible and utilized by ancient civilizations for seals and talismans. It is a variety of chalcedony.

Field identification & locations

Identify in the field by its waxy luster when broken, conchoidal fracture, and inability to be scratched by a steel knife. It is frequently found in riverbeds or coastal areas in India, Brazil, and the USA.