sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Hardness: 6.5-7 (Mohs); Color: Deep brick red per hematite content; Luster: Vitreous to waxy; Crystal Structure: Trigonal (Microcrystalline); Cleavage: None (Conchoidal fracture); Specific Gravity: 2.6-2.9.

Hardness: 6
Color: Deep brick red per hematite content
Luster: Vitreous to waxy

Identified April 4, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the deposition of silica-rich fluids in volcanic vents or sedimentary strata. The red color is caused by the inclusion of fine-grained iron oxides (Hematite) during the crystallization process. It can be found in formations dating back millions of years.

Uses & applications

Used primarily for semi-precious jewelry (beads, cabochons), lapidary art, decorative carvings, and as a popular stone for tumbling and meditation practices.

Geological facts

Jasper was a favorite gem in the ancient world; its name can be traced back in Hebrew, Assyrian, Persian, Greek, and Latin. It is often referred to as the 'Stone of Endurance' and 'Supreme Nurturer' in metaphysical circles.

Field identification & locations

Identify by its opaque quality (unlike carnelian which is translucent), its smooth conchoidal fracture, and extreme hardness (cannot be scratched by a steel knife). Commonly found in riverbeds or coastal areas in Oregon, California, India, and Brazil.

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