sedimentary
Jasper
Microcrystalline Quartz (SiO2)
Hardness of 6.5 to 7 on the Mohs scale, earthy to vitreous luster, opaque appearance, conchoidal fracture, and specific gravity of 2.58 to 2.91.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, earthy to vitreous luster, opaque appearance, conchoidal fracture, and specific gravity of 2.58 to 2.91.
Formation & geological history
Formed through the silica-rich precipitation in marine environments or hydrothermal solutions, often originating in ancient sedimentary or volcanic rock settings.
Uses & applications
Used primarily for ornamental carvings, cabochons in jewelry, and as a collector's mineral specimen.
Geological facts
Jasper has been used since ancient times to create seals, talismans, and decorative items. Its rich colors come from various mineral impurities such as iron oxides.
Field identification & locations
Identified easily by its opaque nature, hardness, and smooth conchoidal breakage. Found worldwide in riverbeds, mountainous regions, and ancient sedimentary deposits.
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