gemstone
Polished Agate
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, and banded microcrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, and banded microcrystalline structure.
Formation & geological history
Forms by the deposition of silica from groundwater in the cavities of igneous and sedimentary rocks.
Uses & applications
Commonly used in ornamental jewelry, carved decorative objects, and as a popular tumbled collector specimen.
Geological facts
Agate banding reflects successive layers of microscopic quartz crystals filling ancient volcanic gas bubbles.
Field identification & locations
Identified by its distinctive concentric color bands and conchoidal fracture, frequently found globally in volcanic regions.
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