mineral

Red Jasper

Red Jasper (SiO2 with Hematite inclusions)

AI-generated identification · may be incorrect

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

Hardness: 6
Color: Terracotta red to deep reddish-brown
Luster: Vitreous to dull

Identified June 24, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed from the deposition of silica from water or hydrothermal fluids into cracks or cavities in other rocks. The red color is caused by the inclusion of iron oxide (hematite) during formation. Found in various geological ages.

Uses & applications

Used primarily in jewelry making (cabochons, beads), decorative lapidary work, ornaments, and collected for its metaphysical properties and aesthetic appeal.

Geological facts

Ancient civilizations such as the Egyptians used red jasper in amulets and jewelry to symbolize vitality and life, often associating it with the blood of Isis. It is a variety of chalcedony.

Field identification & locations

Identify by its characteristic opaque red color, smoothness when polished, and high hardness (it will scratch glass). Commonly found in stream beds or coastal areas in states like Oregon and California, or countries like Brazil and South Africa.