mineral
Dyed Blue Agate
Silicon dioxide (SiO2) with artificial pigment
Hardness: 6.5-7 (Mohs); Color: Electric blue (artificial) with translucent white/grey bands; Luster: Vitreous/Waxy; Structure: Cryptocrystalline; Specific Gravity: 2.6
- Hardness
- 6
- Color
- Electric blue (artificial) with translucent white/grey bands
- Luster
- Vitreous/Waxy
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Physical properties
Hardness: 6.5-7 (Mohs); Color: Electric blue (artificial) with translucent white/grey bands; Luster: Vitreous/Waxy; Structure: Cryptocrystalline; Specific Gravity: 2.6
Formation & geological history
Formed as cavity fillings (geodes) in volcanic or sedimentary rocks via silica deposition from groundwater. This specific specimen has been sliced, polished, and chemically dyed.
Uses & applications
Decorative coasters, jewelry, metaphysical collection, and ornamental displays.
Geological facts
Agate is a variety of chalcedony. While blue lace agate occurs naturally, vibrant cobalt blue tones like this are almost always the result of a staining process using iron-salts or chemical dyes.
Field identification & locations
Identify by looking for concentrations of pigment in the microscopic cracks and banding. Naturally occurring agates are rarely this saturated in blue. Found globally, specifically in Brazil, Uruguay, and the USA.
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