mineral

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Hardness: 7 (Mohs scale); Color: Neon green (artificial), white/clear internally; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture.

Hardness: 7 (Mohs scale)
Color: Neon green (artificial), white/clear internally
Luster: Vitreous

Identified March 18, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Neon green (artificial), white/clear internally; Luster: Vitreous; Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture.

Formation & geological history

Formed naturally in volcanic or sedimentary cavities through hydrothermal deposition of silica over millions of years; later treated with artificial chemical dyes to achieve the neon green color.

Uses & applications

Decorative purposes, souvenir markets, children's gift shops, and low-end mineral collecting.

Geological facts

Geodes are often cut in half and dyed with food-grade or chemical dyes to make them more appealing to casual buyers; the 'neon' green color seen here does not occur naturally in quartz geodes.

Field identification & locations

Identify by looking for concentrations of color in cracks or at the base of crystals, which indicates dye penetration. Unlike natural green minerals like Fluorite or Peridot, the color lacks natural depth and variation.

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