mineral

Dyed Blue Agate Slice

Silicon Dioxide (SiO2)

Hardness: 6.5-7 on Mohs scale. Luster: Vitreous/Waxy. Structure: Cryptocrystalline. Cleavage: None. Color: Bright artificially dyed blue with natural bands of translucent white and yellow. Specimen is a thin, polished slab.

Hardness: 6
Luster: Vitreous/Waxy

Identified July 18, 2026More mineral →

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Physical properties

Formation & geological history

Formed as a secondary mineral in volcanic rock cavities (vesicles) through the slow deposition of silica from groundwater. The bright neon blue color is achieved after extraction by soaking the porous chalcedony in chemical dyes.

Uses & applications

Primarily used for decorative purposes, wind chimes, coasters, jewelry pendants, and as metaphysical healing stones.

Geological facts

Agate is a variety of chalcedony. While agate occurs naturally in many colors, electric neon blues like this are almost always the result of human-made dyes. The banding patterns represent different stages of silica deposition over time.

Field identification & locations

Identify by the characteristic concentric or 'fortification' banding. To check for dye, look for concentrated color in cracks or a hue that does not occur in nature. Common sources include Brazil and Uruguay.