sedimentary

Red Jasper Pebble

Silicon Dioxide (SiO2) with Iron Oxide inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Reddish-brown to dull brick red; Luster: Dull to waxy; Crystal Structure: Trigonal (microcrystalline quartz); Cleavage: None; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Reddish-brown to dull brick red
Luster: Dull to waxy

Identified July 22, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Reddish-brown to dull brick red; Luster: Dull to waxy; Crystal Structure: Trigonal (microcrystalline quartz); Cleavage: None; Specific Gravity: 2.58-2.91

Formation & geological history

Formed through the deposition of silica-rich fluids in sedimentary or low-grade metamorphic environments, where iron oxide micro-inclusions impart the deep reddish color during cementation.

Uses & applications

Commonly used for tumbled stones, lapidary work, wire-wrapped jewelry, decorative gravel, and collecting.

Geological facts

Red jasper has been used for thousands of years in amulets and seals. Ancient civilizations believed it held protective energies and could stop bleeding.

Field identification & locations

Look for a smooth, opaque reddish appearance that cannot be easily scratched by a steel nail. Commonly found along riverbeds, beaches, and gravel deposits worldwide.