mineral
Quartz (Tumbled)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically orange-brown to translucent in this specimen, vitreous luster, trigonal crystal system, no cleavage, specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically orange-brown to translucent in this specimen, vitreous luster, trigonal crystal system, no cleavage, specific gravity around 2.65.
Formation & geological history
Formed in various geological environments, often crystallizing from silica-rich hydrothermal veins or accumulating as weathered clastic grains in sedimentary deposits.
Uses & applications
Used in jewelry, tumbling, decorative items, electronics, and glassmaking.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electric charge under mechanical stress.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture. Commonly found worldwide in riverbeds, beaches, and pegmatites.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary