mineral
Dyed Agate
Silicon Dioxide (SiO2) - variety Chalcedony
AI-generated identification · may be incorrectHardness: 6.5-7 (Mohs scale), Color: Cobalt blue and greenish-brown (artificially dyed), Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.60-2.65
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Cobalt blue and greenish-brown (artificially dyed), Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.60-2.65
Formation & geological history
Formed in volcanic and metamorphic environments as silica-rich water fills cavities in rock. This specific specimen has been tumbled and artificially dyed to achieve its intense colors.
Uses & applications
Decorative items, tumbled stones for collectors, jewelry (beads/cabochons), and metaphysical uses.
Geological facts
Agate is one of the most common materials used for lapidary work. Most bright neon-blue or purple agates found in shops are dyed, as these colors rarely occur so intensely in nature.
Field identification & locations
Identify in the field by its banded appearance and waxy luster. In retail settings, look for 'pooling' of color in cracks, which indicates artificial dyeing.
