gemstone
Agate
Silicon dioxide (Chalcedony), SiO2
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, exhibits banded color variations, waxy to vitreous luster, and a microcrystalline trigonal structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, exhibits banded color variations, waxy to vitreous luster, and a microcrystalline trigonal structure.
Formation & geological history
Forms primarily within cavities of volcanic and metamorphic rocks through the deposition of silica from groundwater over millions of years.
Uses & applications
Widely used in jewelry, ornamental carvings, and industrial abrasive bearings due to its durability.
Geological facts
Agate was highly prized in ancient civilizations as a talisman and for creating intricate intaglio seals.
Field identification & locations
Identified by its distinctive concentric banding and conchoidal fracture, commonly sourced worldwide including Brazil, India, and the USA.
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