mineral

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Brick red to brownish-red with white or yellow veining; Luster: Vitreous to waxy; Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.91.

Hardness: 6
Color: Brick red to brownish-red with white or yellow veining
Luster: Vitreous to waxy

Identified June 24, 2026More mineral →

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Physical properties

Formation & geological history

Formation occurs when silica-rich fluids permeate through volcanic or sedimentary rock, slowly replacing original materials or filling cavities. The red color is derived from iron inclusions (hematite). Many specimens are millions of years old.

Uses & applications

Primarily used in jewelry (cabochons, beads), decorative carvings, and as a popular lapidary material for hobbyists and metaphysical stone collectors.

Geological facts

Jasper is an opaque variety of chalcedony. In ancient times, it was known as the 'supreme nurturer' and was featured in the Breastplate of the High Priest in Biblical descriptions.

Field identification & locations

Identify by its opaqueness (unlike translucent carnelian), its high hardness (it cannot be scratched by a steel knife), and its smooth, waxy feel when polished. Commonly found in riverbeds or coastal areas in India, Brazil, and the Southwestern USA.