gemstone
Agate
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, conchoidal fracture, and crypto-crystalline quartz structure with distinct banded layers.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, conchoidal fracture, and crypto-crystalline quartz structure with distinct banded layers.
Formation & geological history
Formed by the deposition of silica from groundwater in the cavities of igneous and sedimentary rocks over millions of years.
Uses & applications
Commonly used in jewelry, decorative ornaments, ornamental carvings, and industrial pivot bearings.
Geological facts
Agate is one of the oldest known stones used in healing and ornamentation, dating back to the Neolithic period.
Field identification & locations
Easily identified by its characteristic concentric bands of color and waxy luster; found worldwide, particularly in volcanic rock cavities.
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