sedimentary
Red Jasper
Microcrystalline Quartz (SiO2) with Hematite impurities
Hardness: 6.5-7 (Mohs), Color: Brick red to brownish-red, Luster: Dull or waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None (Conchoidal fracture), SG: 2.58-2.91
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs), Color: Brick red to brownish-red, Luster: Dull or waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None (Conchoidal fracture), SG: 2.58-2.91
Formation & geological history
Formed when fine silica-rich materials were deposited as sediment or in hydrothermal veins, with high iron oxide (hematite) content providing the red pigment. Commonly found in Mesozoic or Paleozoic geological layers.
Uses & applications
Used extensively in jewelry for cabochons and beads, ornamental carvings, lapidary art, and as a healing stone in metaphysical communities.
Geological facts
Red Jasper is known as a stone of endurance. Its color is essentially due to rusted iron within the quartz structure. It was highly prized in the ancient world for its supposed protective qualities.
Field identification & locations
Identify by its deep red color, high hardness (cannot be scratched by a steel nail), and smooth, non-porous surface. Commonly found in riverbeds, desert washes, and near volcanic areas globally.
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