mineral
Dyed Agate Geode Slice
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 6.5-7 Mohs; Color: Naturally grey/white but artificially dyed pink/purple; Luster: Vitreous to waxy; Structure: Cryptocrystalline quartz; Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.64
- Hardness
- 6
- Color
- Naturally grey/white but artificially dyed pink/purple
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 6.5-7 Mohs; Color: Naturally grey/white but artificially dyed pink/purple; Luster: Vitreous to waxy; Structure: Cryptocrystalline quartz; Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.64
Formation & geological history
Formed as a geode within volcanic rock cavities where silica-rich groundwater deposited layers of quartz over long periods. This specific specimen has been sliced, polished, and artificially dyed.
Uses & applications
Commonly used for home decor, paperweights, healing crystals, and lapidary art.
Geological facts
The vibrant pink and purple hues in this specimen are the result of chemical dyes; natural agate is rarely this saturated. The small hollow center with tiny crystals is called a druzy cavity.
Field identification & locations
Identify by the concentric 'fortification' banding and the rough, rocky exterior crust (cortex). Often found in basaltic regions of Brazil and Uruguay.
