Rock Identifier
Dyed tumbled quartz (likely quartzite or quartz crystal) (Quartz, silicon dioxide (SiO₂)) — mineral
mineral

Dyed tumbled quartz (likely quartzite or quartz crystal)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent vivid pink-purple color from artificial dye, vitreous luster, massive/granular texture, and no obvious cleavage. The rounded shape is mechanically tumbled and polished; visible fractures may be dye-filled.

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Physical properties

Hardness 7 Mohs; translucent vivid pink-purple color from artificial dye, vitreous luster, massive/granular texture, and no obvious cleavage. The rounded shape is mechanically tumbled and polished; visible fractures may be dye-filled.

Formation & geological history

Quartz formed in igneous or hydrothermal environments, commonly millions to billions of years old; the pink coloration and polishing are human-applied. If the base is quartzite, it formed by metamorphism of quartz-rich sandstone.

Uses & applications

Used mainly as an inexpensive decorative or lapidary stone, souvenir, or craft material; not generally considered fine gemstone material. Common pieces sell for a few dollars.

Geological facts

Natural purple quartz is amethyst, while natural pink quartz is usually pale and cloudy; this saturated neon color strongly indicates dye treatment. Dye may concentrate in cracks and fade with prolonged sunlight or chemicals.

Field identification & locations

Identify by its glassy luster, quartz-like translucency, rounded polish, and hardness sufficient to scratch ordinary glass; inspect cracks for concentrated color and test inconspicuously for dye transfer. Common source material comes from Brazil, Madagascar, India, and commercial lapidary suppliers.