Rock Identifier
Quartz crystal (likely clear quartz) (Quartz, silicon dioxide (SiO₂)) — mineral
mineral

Quartz crystal (likely clear quartz)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Mohs hardness 7; transparent to translucent, colorless with a glassy luster and hexagonal crystal structure. The specimen shows an elongated prismatic crystal with a pointed termination; visible color may be due to lighting or inclusions.

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Physical properties

Mohs hardness 7; transparent to translucent, colorless with a glassy luster and hexagonal crystal structure. The specimen shows an elongated prismatic crystal with a pointed termination; visible color may be due to lighting or inclusions.

Formation & geological history

Quartz crystallizes from silica-rich fluids or cooling magma, commonly in veins and cavities. Quartz is widespread across geologic ages and rock types.

Uses & applications

Used in jewelry and mineral collections; industrial quartz is used in glass, electronics, and abrasives.

Geological facts

Quartz is one of Earth’s most abundant minerals and has no cleavage, breaking instead with a conchoidal fracture.

Field identification & locations

Identify by its glassy luster, hardness, and typically six-sided prism; common worldwide, including Brazil, Madagascar, and the United States. The image alone cannot confirm color treatment or exact variety.