6mm Polka Dot Chalcedony Natural Round - 15-16 Inch
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Polka Dot Chalcedony is a form of Chalcedony Quartz, which can be identified from other minerals by its composition of silicon dioxide, hexagonal crystal structure and hardness. Polka Dot Chalcedony occurs in brown, tan, cream and white, sometimes with flecks, mottling or swirling of these colors. Chalcedony is known to have minor piezoelectricity, which means that it may carry a small electrical charge.