sedimentary
Jasper
Silicon dioxide with impurities (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7; displays earthy brown, red, or yellow colors with a waxy luster; microcrystalline quartz structure with conchoidal fracture.
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Physical properties
Mohs hardness of 6.5 to 7; displays earthy brown, red, or yellow colors with a waxy luster; microcrystalline quartz structure with conchoidal fracture.
Formation & geological history
Formed via the precipitation of silica-rich solutions in sedimentary environments or hydrothermal veins, often dating from the Precambrian to Cenozoic eras.
Uses & applications
Commonly used in lapidary arts, ornamental carvings, polished cabochons, and gemstone jewelry collections.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry components like arrowheads due to its toughness.
Field identification & locations
Identify by its opaque nature, smooth conchoidal break, and lack of reaction to acid; found globally in riverbeds and mountainous regions.
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