sedimentary
Red Jasper
Silicon Dioxide (SiO2) containing Iron Oxide impurities
Hardness: 6.5-7 (Mohs), Color: Deep brick-red, Luster: Dull to Vitreous (when polished), Crystal Structure: Microcrystalline/Trigonal, Specific Gravity: 2.58-2.91
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs), Color: Deep brick-red, Luster: Dull to Vitreous (when polished), Crystal Structure: Microcrystalline/Trigonal, Specific Gravity: 2.58-2.91
Formation & geological history
Formed primarily in sedimentary environments when silica-rich fluids permeate through volcanic ash or other sediments, often enriched with iron to produce the red color. Found in diverse geological ages.
Uses & applications
Commonly used in lapidary arts for jewelry, beads, cabochons, and decorative ornamental items. Also highly valued in the metaphysical community.
Geological facts
Red Jasper is known as the 'Stone of Endurance' and has been used by ancient civilizations for protective amulets and seals. It is a variety of chalcedony.
Field identification & locations
Identified in the field by its opaque deep red color, conchoidal fracture, and inability to be scratched by a steel knife. Commonly found in riverbeds or near volcanic deposits.
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