
mineral
Quartz crystal (likely clear quartz)
Quartz, silicon dioxide (SiO₂)
AI-generated identification · may be incorrectMohs 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.
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Unidentified pink-and-gray mineral or rock specimen
Undetermined; the image is too blurry for reliable identification
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