sedimentary
Jasper
Silicon dioxide (SiO2) microcrystalline quartz
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque luster, featuring multicolored patterns of green, brown, and yellow. Crystal structure is trigonal (microcrystalline).
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque luster, featuring multicolored patterns of green, brown, and yellow. Crystal structure is trigonal (microcrystalline).
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks where silica-rich fluids replace organic material or fill cavities over millions of years.
Uses & applications
Commonly used for making polished cabochons, decorative carvings, ornamental jewelry, and as a collector specimen.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry components by various civilizations globally.
Field identification & locations
Identified by its opaque nature, conchoidal fracture, and inability to be scratched by a steel knife. Found worldwide in riverbeds and ancient hydrothermal deposits.
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