sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
Hardness: 6.5-7 (Mohs scale); Color: Brick red to deep maroon; Luster: Dull to vitreous; Crystal structure: Trigonal/Microcrystalline; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58-2.91
- Hardness
- 6
- Color
- Brick red to deep maroon
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6.5-7 (Mohs scale); Color: Brick red to deep maroon; Luster: Dull to vitreous; Crystal structure: Trigonal/Microcrystalline; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58-2.91
Formation & geological history
Formed via the deposition of silica-rich fluids in volcanic ash or sedimentary beds, often during the Paleozoic or Mesozoic eras. The red color is derived from high hematite (iron) content.
Uses & applications
Used primarily as a gemstone for jewelry, lapidary carvings, decorative tiling, and as a popular collector's stone. In ancient times, it was used for seals and amulets.
Geological facts
Known as the 'Supreme Nurturer' in metaphysical circles. In the Czech and Polish border regions (Silesia), high-quality agates and jaspers have been mined since the Middle Ages.
Field identification & locations
Identifiable by its opaque red color, smooth waxy surface when wet, and its inability to be scratched by a steel knife. It is common in the Sudetes mountain region near the provided coordinates.
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