sedimentary
Polished Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectMohs hardness of 6.5 to 7, displays multicolored patterns in red, green, and brown, with a vitreous to dull luster and cryptocrystalline structure.
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Physical properties
Mohs hardness of 6.5 to 7, displays multicolored patterns in red, green, and brown, with a vitreous to dull luster and cryptocrystalline structure.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, where silica-rich fluids precipitate microcrystalline quartz in cavities and fractures over millions of years.
Uses & applications
Widely used for ornamental carvings, polished display slabs, cabochons, and gemstone jewelry.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components by various civilizations globally.
Field identification & locations
Identified by its conchoidal fracture and lack of cleavage, commonly sourced from riverbeds and mountainous regions worldwide.
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