mineral

Milky quartz (rose-tinted quartz)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Mohs hardness 7; translucent milky to pale pink body, vitreous luster, conchoidal fracture, and no cleavage. The cloudy appearance comes from microscopic fluid inclusions or defects; crystal structure is trigonal.

Identified August 8, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich hydrothermal fluids cool in veins, cavities, or pegmatites, typically in igneous and metamorphic terrains. Quartz is common throughout Earth history, with no specific age identifiable from the image.

Uses & applications

Common material for lapidary carvings, cabochons, tumbled stones, and mineral collections; clear varieties are used in optics, electronics, and glass manufacture. This small rough piece has modest commercial value.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure. The specimen may also be pale rose quartz, though its cloudy, rough appearance prevents confident distinction.

Field identification & locations

Identify by its glassy fracture, hardness, lack of cleavage, and ability to scratch ordinary glass; it should not fizz in dilute acid. Common worldwide, especially in Brazil, Madagascar, the United States, and alpine vein deposits.