sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale. Colors vary widely including red, brown, yellow, and green. Exhibits a dull to vitreous luster and a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale. Colors vary widely including red, brown, yellow, and green. Exhibits a dull to vitreous luster and a conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks where silica-rich fluids precipitate microcrystalline quartz.
Uses & applications
Used primarily for ornamental objects, carved gemstones, jewelry, and lapidary collections.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative items due to its durability and rich opacity.
Field identification & locations
Identified by its opaque nature, lack of cleavage, and ability to take a high polish. Found globally in ancient riverbeds and volcanic deposits.
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