sedimentary
Red Jasper Pebble
Silicon Dioxide (SiO2) with Iron Oxide inclusions
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
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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.
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