Agate is a variety of chalcedony, which is a mineral in the quartz group. The chemical composition of agate is primarily silicon dioxide (SiO2), with small amounts of impurities and trace elements that give it its unique color and patterns.
Agate is a variety of chalcedony, which is a mineral in the quartz group. The chemical composition of agate is primarily silicon dioxide (SiO2), with small amounts of impurities and trace elements that give it its unique color and patterns.