mineral
Tumbled Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale), Color: Clear to translucent smoky grey, Luster: Vitreous, Crystal structure: Trigonal, Cleavage: None/Conchoidal fracture.
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Physical properties
Hardness: 7 (Mohs scale), Color: Clear to translucent smoky grey, Luster: Vitreous, Crystal structure: Trigonal, Cleavage: None/Conchoidal fracture.
Formation & geological history
Quartz forms from cooling magma or hydrothermal veins. This specimen shows signs of mechanical tumbling or alluvial wear, likely found in riverbeds or ocean beaches.
Uses & applications
Commonly used in jewelry, decorative gemstone collections, and industrial glass production. Tumbled stones are often used in metaphysical practices and crystal healing.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the Greek word 'krustallos', meaning 'ice'.
Field identification & locations
Identify in the field by its hardness (scratches glass) and conchoidal (glass-like) fracture. Commonly found in most geological environments worldwide.
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