sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Hardness: 6.5-7 (Mohs); Color: Deep red to brownish-red; Luster: Dull to vitreous; Structure: Microcrystalline quartz; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.58-2.91
- Hardness
- 6
- Color
- Deep red to brownish-red
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6.5-7 (Mohs); Color: Deep red to brownish-red; Luster: Dull to vitreous; Structure: Microcrystalline quartz; Cleavage: None (Conchoidal fracture); Specific Gravity: 2.58-2.91
Formation & geological history
Formed through the accumulation of silica-rich fluids in volcanic or sedimentary environments, where iron oxides (hematite) provide the red color. Typically Proterozoic to Phanerozoic Age.
Uses & applications
Ornamental stone, gemstone cabochons, metaphysical collecting, and historically used for stone tools and seals.
Geological facts
Commonly known as the 'Supreme Nurturer' in folklore. Its red color is strictly due to the presence of hematite. In ancient times, it was used in royal seals and talismans to protect the wearer.
Field identification & locations
Identify by its opaque nature, characteristic brick-red color, and smooth fracture. Commonly found in river beds or desert pavements in regions like India, Brazil, and the Southwestern United States.
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