sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones including red, brown, and yellow, and a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones including red, brown, and yellow, and a conchoidal fracture.
Formation & geological history
Formed through the accumulation of silica-rich sediments or volcanic ash, typically in marine environments, over millions of years.
Uses & applications
Widely used in jewelry, ornamental carvings, lapidary arts, and as a collectible decorative stone.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative items due to its durability and rich coloration.
Field identification & locations
Identified by its opacity, waxy luster, and lack of cleavage. Common worldwide, particularly in regions with ancient volcanic or sedimentary activity.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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