mineral
Dyed Agate Slice
Silicon Dioxide (SiO2) - Chalcedony variety
Hardness: 6.5-7 on Mohs scale; Color: Artificially dyed pink/magenta; Luster: Vitreous to waxy; Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.58-2.64
- Hardness
- 6
- Color
- Artificially dyed pink/magenta
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 on Mohs scale; Color: Artificially dyed pink/magenta; Luster: Vitreous to waxy; Structure: Microcrystalline; Cleavage: None; Specific Gravity: 2.58-2.64
Formation & geological history
Formed as secondary deposits in volcanic rock cavities (amygdules). This specific specimen has been sliced, polished, and chemically dyed to enhance its color.
Uses & applications
Primarily used as coasters, decorative home decor items, or in jewelry such as pendants and earrings.
Geological facts
Agate is a cryptocrystalline variety of silica. The banding is formed by the rhythmic crystallization of silica from hydrothermal fluids. Most bright pink, blue, or purple agates in the market are dyed.
Field identification & locations
Look for concentric banding and a waxy luster. Natural agates are rarely this vibrant neon pink; the saturation in the outer cracks often reveals the use of artificial dyes.
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