sedimentary
Quartz Geode Fragment
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. Displays a yellowish-amber color due to iron oxide inclusions.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, and hexagonal crystal system. Displays a yellowish-amber color due to iron oxide inclusions.
Formation & geological history
Formed through the deposition of silica-rich groundwater inside cavities of sedimentary or volcanic rocks over millions of years.
Uses & applications
Used primarily in lapidary arts, wire-wrapped jewelry, mineral collecting, and decorative display specimens.
Geological facts
Geodes form when mineral-rich water enters a hollow cavity in a host rock, slowly precipitating crystals inward over geological epochs.
Field identification & locations
Easily identified by its outer weathered limestone rind and sparkling internal quartz crystals. Found worldwide in limestone formations.
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