mineral
Eye Agate
Silicon dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, microcrystalline structure, and concentric circular bands resembling eyes.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy luster, microcrystalline structure, and concentric circular bands resembling eyes.
Formation & geological history
Formed in gas cavities within volcanic rocks through the rhythmic deposition of silica-rich groundwater over millions of years.
Uses & applications
Used primarily in lapidary arts, ornamental carvings, jewelry, and as a collectible specimen.
Geological facts
Eye agates have historically been prized as protective talismans and amulets across various ancient cultures due to their striking eye-like patterns.
Field identification & locations
Easily identified by concentric circular rings on a polished surface; commonly found in volcanic regions and riverbeds worldwide.
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