mineral

Dyed pink banded agate

Chalcedony (microcrystalline quartz), SiO₂, commonly dyed

AI-generated identification · may be incorrect

Tumbled and polished, with vivid magenta-pink and pale bands; waxy to glassy luster, hardness about 6.5–7 Mohs, cryptocrystalline structure, no visible cleavage, and specific gravity near 2.6. The intense color is likely artificial dye concentrated along porous banding.

Identified August 23, 2026More mineral →

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Physical properties

Formation & geological history

Agate forms when silica-rich groundwater fills cavities in volcanic rocks, depositing rhythmic chalcedony bands over long periods, typically during the host rock’s geological history. This specimen was subsequently cut, tumbled, polished, and dyed.

Uses & applications

Used as an inexpensive ornamental stone for beads, cabochons, carvings, and décor; it has modest value unless the pattern or provenance is exceptional.

Geological facts

Agate is a variety of chalcedony distinguished by banding, and dyeing dramatically expands its commercial color range. Pink coloration can occur naturally but is usually softer and less uniformly neon-bright.

Field identification & locations

Common sources include Brazil, Uruguay, India, Madagascar, Mexico, and the United States. Identify it by translucent-to-opaque curved bands, quartz-like hardness, and resistance to scratching by steel; dye may collect in cracks or rub off with solvents.