mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Colorless/Transparent
Luster: Vitreous (glassy)

Identified March 25, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal/Trigonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65.

Formation & geological history

Formed through the crystallization of silica-rich molten rock (magma) or from hydrothermal veins. It fits into almost any geological age and is found in igneous, metamorphic, and sedimentary environments worldwide.

Uses & applications

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

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge in response to applied mechanical stress, which is why it's used in watches.

Field identification & locations

Identify by its hardness (scratches glass and steel), hexagonal crystal habit, and lack of cleavage. Commonly found in granite outcroppings or as pebbles in riverbeds. Note: If it contains bubbles, it is likely glass rather than quartz.