sedimentary
Red Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque red to reddish-brown color, vitreous to dull luster, and conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque red to reddish-brown color, vitreous to dull luster, and conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary deposits or volcanic ash, typically in marine environments rich in silica and iron oxides.
Uses & applications
Commonly used for ornamental carvings, cabochons, polished decorative stones, and lapidary work.
Geological facts
Red jasper has been used since ancient times for amulets, seals, and weaponry, prized for its durability and rich color.
Field identification & locations
Identify by its distinct brick-red color, microcrystalline texture, and hardness that scratches glass. Found worldwide, especially in India, Brazil, and the USA.
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Sandstone or Siltstone
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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