mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, waxy to vitreous luster, conchoidal fracture, and typically translucent yellow-brown to clear.
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Physical properties
Hardness of 7 on the Mohs scale, waxy to vitreous luster, conchoidal fracture, and typically translucent yellow-brown to clear.
Formation & geological history
Formed through the precipitation of silica-rich solutions in hydrothermal veins or sedimentary environments, often shaped by tumbling.
Uses & applications
Commonly used in lapidary arts, jewelry, decorative stones, and metaphysical collections.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits strong piezoelectric properties.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and smooth tumbled finish; found globally in stream beds and mineral shops.
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Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Limonite
FeO(OH)•nH2O
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Limonite
FeO(OH)•nH2O
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
mineral