sedimentary

Red Jasper

Chalcedony (SiO2) with iron inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: deep red with black or brown inclusions; Luster: vitreous to dull; Crystal Structure: Trigonal (microcrystalline); Cleavage: none; Specific Gravity: 2.58-2.91

Hardness: 6
Color: deep red with black or brown inclusions
Luster: vitreous to dull

Identified July 1, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: deep red with black or brown inclusions; Luster: vitreous to dull; Crystal Structure: Trigonal (microcrystalline); Cleavage: none; Specific Gravity: 2.58-2.91

Formation & geological history

Forms when silica-rich fluids permeate through volcanic or sedimentary rock, often acquiring its red color from high iron content. It typically forms in hydrothermal veins or as nodules in sedimentary deposits.

Uses & applications

Used extensively in jewelry for cabochons and beads, ornamental sculptures, and as a popular pocket stone for collectors.

Geological facts

Known as the 'Stone of Endurance' and 'The Supreme Nurturer.' It was used by ancient civilizations for amulets and carvings and is mentioned multiple times in historical and religious texts.

Field identification & locations

Identifiable by its deep mahogany-red color and opacity (unlike carnelian which is translucent). It is found globally with massive deposits in India, Brazil, and the USA.