sedimentary
Red Jasper
Silicon Dioxide with Iron Oxide inclusions (SiO2)
Hardness: 6.5-7 (Mohs scale), Color: Brick red to brownish-red with white quartz veins, Luster: Vitreous to waxy, Crystal Structure: Hexagonal (cryptocrystalline), Cleavage: None (conchoidal fracture)
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Brick red to brownish-red with white quartz veins, Luster: Vitreous to waxy, Crystal Structure: Hexagonal (cryptocrystalline), Cleavage: None (conchoidal fracture)
Formation & geological history
Formed primarily in sedimentary environments when silica-rich fluids permeate porous rocks or volcanic ash, slowly precipitating microcrystalline quartz and iron oxide over millions of years.
Uses & applications
Commonly used for ornamental carvings, tumble polishing, lapidary cabochons for jewelry, and as a decorative stone in metaphysical practices.
Geological facts
Red Jasper is known as a stone of endurance. Its vibrant red color comes from high concentrations of hematite or iron oxide trapped within the silica matrix.
Field identification & locations
Identify by its deep red color, opacity (even on thin edges), and inability to be scratched by a steel knife. Frequently found in riverbeds or as nodules in volcanic landscapes.
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