sedimentary

Red Jasper with Quartz and Hematite

Silicon Dioxide (SiO2) with Ferric Iron inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Brick red, orange, and white with black streaks; Luster: Dull/Waxy; Crystal Structure: Microcrystalline; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.6-2.9

Hardness: 6
Color: Brick red, orange, and white with black streaks
Luster: Dull/Waxy

Identified April 26, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs); Color: Brick red, orange, and white with black streaks; Luster: Dull/Waxy; Crystal Structure: Microcrystalline; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.6-2.9

Formation & geological history

Formed through the deposition of silica from hydrothermal fluids or in sedimentary environments. The red color comes from iron impurities (hematite) during the lithification process. Often found in Precambrian formations.

Uses & applications

Used primarily for lapidary work, jewelry (cabochons), interior decoration, and as a popular specimen for rock hounding and spiritual/metaphysical collections.

Geological facts

Jasper is an opaque variety of chalcedony. The red variety is specifically known as the 'stone of endurance.' It is incredibly durable and resistant to weathering, which is why it is often found in riverbeds and on beaches.

Field identification & locations

Identify by its hardness (cannot be scratched by a steel knife), red opaque color, and smooth waxy feel when polished. Commonly found in areas with volcanic activity or ancient seabed deposits like the Western US and South Africa.