mineral

Dyed Agate Geode

Silicon Dioxide (SiO2) with artificial pigment

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Neon purple/magenta (artificially dyed); Luster: Vitreous to waxy; Structure: Cryptocrystalline/Microcrystalline quartz; Cleavage: None; Specific Gravity: 2.60-2.65

Hardness: 6
Color: Neon purple/magenta (artificially dyed)
Luster: Vitreous to waxy

Identified June 7, 2026More mineral →

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Physical properties

Formation & geological history

Formed primarily in volcanic rock cavities (vesicles) where silica-rich groundwater deposited layers of chalcedony over millions of years. This specific specimen has undergone a post-mining process where it was soaked in chemical dyes to achieve the vibrant purple color.

Uses & applications

Ornamental decoration, paperweights, metaphysical or healing stone collections, and educational specimens for beginner collectors.

Geological facts

The concentric banding seen in agates is a result of periodic changes in the silica concentration during formation. The intense 'neon' colors not seen in nature are a result of the stone's porosity, allowing it to absorb synthetic dyes.

Field identification & locations

Identify by the presence of banding and a druzy quartz center. In the field, look for nodules with a waxy exterior. Natural agates are common in Brazil, Uruguay, and the USA, but dyed versions like this are primarily commercial products.