mineral
Agate
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, cryptocrystalline structure, and distinct concentric banding in various colors.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy to vitreous luster, cryptocrystalline structure, and distinct concentric banding in various colors.
Formation & geological history
Formed by the deposition of silica from groundwater in the cavities of igneous and metamorphic rocks over millions of years.
Uses & applications
Widely used for making jewelry, ornamental carvings, polished specimens, and industrial abrasives.
Geological facts
Agate is a microcrystalline variety of quartz and was highly valued as a talisman in ancient civilizations for protection.
Field identification & locations
Easily identified by its characteristic curved bands and waxy sheen; commonly found in volcanic rock cavities worldwide.
