mineral

Raw quartz crystal

Quartz (silicon dioxide, SiO₂), likely rose or milky quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent pale pink to whitish color, vitreous luster, hexagonal crystal system, and indistinct cleavage with conchoidal fracture. The specimen appears naturally crystalline but weathered or broken.

Identified September 9, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize in cavities, veins, pegmatites, or hydrothermal environments; individual crystals may range from ancient Precambrian to much younger geological ages. Exact age and locality cannot be determined from the image.

Uses & applications

Used for glass, electronics, abrasives, and engineered stone; attractive rose quartz is used in carvings and inexpensive jewelry. This small rough specimen has modest collectible value.

Geological facts

Pink color may result from trace elements, microscopic inclusions, or irradiation-related defects; many rose-quartz masses lack visible crystal faces. Quartz is one of Earth’s most abundant and chemically durable minerals.

Field identification & locations

Identify by its glassy luster, translucent appearance, lack of obvious cleavage, and ability to scratch ordinary glass; it should not be confused with calcite, which is softer. Common worldwide, especially in Brazil, Madagascar, India, and the United States.