gemstone
Agate
Silicon Dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, trigonal crystal system, and exhibits distinct concentric color banding.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, trigonal crystal system, and exhibits distinct concentric color banding.
Formation & geological history
Formed by the deposition of silica from groundwater in cavities of igneous and sedimentary rocks over millions of years.
Uses & applications
Widely used in jewelry, ornamental carvings, decorative slices, and precision instruments like mortars and pestles.
Geological facts
Agate is one of the most popular stones for tumbling and polishing due to its durability and striking banded patterns.
Field identification & locations
Easily identified by its characteristic curved concentric bands and microcrystalline structure; commonly found worldwide, especially in volcanic rock cavities.
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