mineral

Tumbled quartz crystal, possibly rose quartz

Quartz (SiO₂), likely iron- or manganese-tinted varieties

AI-generated identification · may be incorrect

Appears as a small polished/tumbled, translucent pale pink-to-clear specimen with vitreous luster and rounded surfaces; quartz hardness is Mohs 7, with no cleavage, conchoidal fracture, and specific gravity about 2.65. Image quality and reflections make the exact color and internal inclusions uncertain.

Identified September 12, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich hydrothermal fluids, pegmatites, and igneous rocks; the photographed piece was likely mechanically tumbled and polished. Quartz is common from Precambrian through recent geological settings.

Uses & applications

Used for ornamental stones, crystal collecting, carvings, and jewelry; ordinary quartz has broad industrial uses in glass, ceramics, abrasives, and electronics. A small tumbled piece generally has modest value.

Geological facts

Rose quartz is commonly colored by microscopic inclusions of dumortierite or related minerals rather than simple dissolved iron. Clear quartz may show internal fractures, veils, or mineral inclusions.

Field identification & locations

Check for glass-like luster, rounded conchoidal surfaces, lack of cleavage, and resistance to scratching by a steel file; quartz should scratch ordinary window glass. Common sources include Brazil, Madagascar, India, and the United States.