gemstone
Agate
Silicon Dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, microcrystalline quartz structure, conchoidal fracture, and often displays distinct concentric color banding.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy luster, microcrystalline quartz structure, conchoidal fracture, and often displays distinct concentric color banding.
Formation & geological history
Formed through the deposition of silica from groundwater in the cavities of igneous or sedimentary rocks, often originating over millions of years in volcanic environments.
Uses & applications
Widely used in jewelry making, ornamental carvings, decorative objects, and historical precision instruments due to its durability.
Geological facts
Ancient civilizations valued agates as talismans for protection and healing, and the stones are named after the Achates River in Sicily.
Field identification & locations
Easily identified by its translucent banded layers and waxy luster; commonly found in volcanic rock cavities worldwide and river gravels.
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