mineral
Dyed Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
Hardness: 6.5-7 Mohs; Color: Naturally grey/white but artificially dyed deep purple; Luster: Vitreous to waxy; Structure: Microcrystalline with central druzy crystals; Cleavage: None
- Hardness
- 6
- Color
- Naturally grey/white but artificially dyed deep purple
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs; Color: Naturally grey/white but artificially dyed deep purple; Luster: Vitreous to waxy; Structure: Microcrystalline with central druzy crystals; Cleavage: None
Formation & geological history
Formed as silica-rich fluids deposited layers within volcanic rock cavities or sedimentary nodes. This specimen has been cut, polished, and chemically dyed.
Uses & applications
Primarily used as decorative pieces, bookends, paperweights, or in lapidary work and affordable jewelry.
Geological facts
Agates are naturally porous, which allows them to absorb dyes. Bright purple or neon colors in agates are almost always the result of human enhancement rather than natural processes.
Field identification & locations
Identify by its concentric banding and 'druzy' crystal center. Natural versions are common in Brazil and Uruguay; dyed versions are ubiquitous in gift shops.
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