Rock Identifier
Quartz (Silicon dioxide (SiO2)) — mineral
mineral

Quartz

Silicon dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: transparent, translucent, or opaque in various colors (this specimen is yellowish to white). Luster: vitreous. Crystal structure: trigonal. Cleavage: none, conchoidal fracture. Specific gravity: 2.65.

Hardness
7 on Mohs scale
Luster
vitreous
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Physical properties

Hardness: 7 on Mohs scale. Color: transparent, translucent, or opaque in various colors (this specimen is yellowish to white). Luster: vitreous. Crystal structure: trigonal. Cleavage: none, conchoidal fracture. Specific gravity: 2.65.

Formation & geological history

Formed from silica-rich solutions or magmas in various geological environments. This appears to be a water-worn or tumbled piece, likely found on a beach or riverbed.

Uses & applications

Used in electronics, optics, glassmaking, and jewelry. As a tumbled stone, it is often collected for decorative purposes.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is known for its piezoelectric properties.

Field identification & locations

Can be identified by its hardness (scratches glass) and conchoidal fracture. Commonly found worldwide. Tumbled or water-worn pieces are often collected by beachcombers.

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