mineral

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: Clear to white; Luster: Vitreous (glassy); Crystal structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Clear to white
Luster: Vitreous (glassy)

Identified July 12, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Clear to white; Luster: Vitreous (glassy); Crystal structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed from cooling magma or hydrothermally in veins. It is one of the most abundant minerals in the Earth's crust and can be found in igneous, metamorphic, and sedimentary environments worldwide.

Uses & applications

Used in electronics (oscillators), glassmaking, abrasives, and as a popular gemstone for jewelry and specimen collecting.

Geological facts

Quartz is piezoelectric, meaning it generates an electric charge when pressurized. It has been used by humans for tools and adornment for thousands of years.

Field identification & locations

Identify in the field by its glassy luster, lack of cleavage, and ability to scratch glass but not Topaz. Common in granite outcroppings and riverbeds.