mineral
Tumbled Quartz
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, clear to white or slightly bluish color, vitreous luster, trigonal crystal system, no true cleavage, specific gravity of 2.65.
Identified More mineral →
Explore Tumbled Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 7 on the Mohs scale, clear to white or slightly bluish color, vitreous luster, trigonal crystal system, no true cleavage, specific gravity of 2.65.
Formation & geological history
Forms in a wide variety of geological environments, frequently in hydrothermal veins and pegmatites, as well as igneous, metamorphic, and sedimentary rocks.
Uses & applications
Used in jewelry, tumbling, decorative objects, electronics, and oscillators due to its piezoelectric properties.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectricity, meaning it can generate an electrical charge when mechanical stress is applied.
Field identification & locations
Easily identified by its hardness (scratches glass), lack of cleavage, and vitreous luster. Found globally in almost every rock type.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
sedimentary
Limonite / Goethite (Iron Ore Mineral nodule)
FeO(OH)·nH2O / FeO(OH)
mineral
Schist
Schist
Metamorphic
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral