mineral
Dyed Agate
SiO2
AI-generated identification · may be incorrectHardness: 6.5-7; Color: Vivid blue (dyed); Luster: Vitreous; Crystal structure: Cryptocrystalline; Cleavage: None; Specific gravity: 2.58-2.64
- Hardness
- 6
- Color
- Vivid blue (dyed)
- Luster
- Vitreous
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Physical properties
Hardness: 6.5-7; Color: Vivid blue (dyed); Luster: Vitreous; Crystal structure: Cryptocrystalline; Cleavage: None; Specific gravity: 2.58-2.64
Formation & geological history
Formed in volcanic cavities or vesicles as silica-rich fluids deposit layers of chalcedony. The vivid blue color is the result of artificial dyeing.
Uses & applications
Used in jewelry, decorative items, and as a popular collectible.
Geological facts
Agate is highly porous, making it relatively easy to dye into vibrant colors not naturally found in the stone.
Field identification & locations
Identify by the characteristic banding and typical vitreous luster. The unnaturally bright blue color indicates it has been dyed. Commonly found in areas with past volcanic activity.
