Donut Pendant

Donut Pendant

Agate was formed in mountain lavas due to intergrowth of various minerals of the silica family (SiO2), in which chalcedony is the predominant mineral. It most often has a layered structure. Alternating layers come in different colors and may have varying degrees of transparency. Due to this, in the cross-section of the stone, an original, non-repeating pattern is found.