sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, waxy luster, opaque, and exhibits conchoidal fracture with various earth-tone colors.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, waxy luster, opaque, and exhibits conchoidal fracture with various earth-tone colors.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often occurring in ancient marine environments or hydrothermal veins.
Uses & applications
Used widely in ornamental carvings, jewelry making, lapidary arts, and as a popular collector specimen.
Geological facts
Jasper has been used by ancient civilizations since the 4th millennium BC for making tools, seals, and decorative items.
Field identification & locations
Identify in the field by its distinct opaque color banding, hardness scratching glass, and lack of visible crystal structure.
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