mineral
Dyed Agate Slice
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Hardness: 6.5-7 (Mohs scale), Color: Teal/Green (artificially dyed), Luster: Vitreous to waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None (Conchoidal fracture)
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Teal/Green (artificially dyed), Luster: Vitreous to waxy, Crystal Structure: Trigonal/Microcrystalline, Cleavage: None (Conchoidal fracture)
Formation & geological history
Formed in volcanic rock cavities (vesicles) where silica-rich groundwater deposited layers of chalcedony over time. This specimen has been sliced and chemically dyed to enhance its color.
Uses & applications
Primarily used for decorative purposes, jewelry (pendants, coasters), and as display specimens for collectors.
Geological facts
Agate is a variety of chalcedony characterized by its fineness of grain and brightness of color. Natural agates are rarely this specific shade of teal; most brightly colored agate slices in the market are dyed using metal salts.
Field identification & locations
Identify in the field by its waxy luster and translucency. Natural specimens often show concentric banding. For collectors, look for the 'rough' outer rind which is often limestone or basalt.
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