sedimentary
Jasper
Silicon dioxide with impurities (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque yellow to brown color, waxy luster, and microcrystalline crystal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque yellow to brown color, waxy luster, and microcrystalline crystal structure.
Formation & geological history
Formed through the silification of sedimentary rocks or volcanic ash, occurring in hydrothermal veins and marine environments.
Uses & applications
Used primarily for ornamental carvings, polished cabochons in jewelry, and as a decorative display specimen for collectors.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry components due to its fracture toughness.
Field identification & locations
Identify in the field by its conchoidal fracture, lack of cleavage, and resistance to steel scratching. Commonly found globally in riverbeds and mountainous terrain.
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