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These matching Polyhedroid Agate slices are polished on both sides, making them perfect for custom jewelry use. The pair shows translucent and black banded agate with a thin open center outlined in yellow-orange.
47mm x 10mm
50mm x 10mm
between 5mm and 6mm thick
Polyhedroid Agates were found in Paraiba, Brazil, but are now unavailable. They are a unique formation of agate, featuring naturally flat surfaces at a variety of different angles. They are believed to have formed in the negative spaces between large crystal blades of calcite or aragonite, and can occasionally feature multiple "chambers" where those blades eroded and adjacent agates fused together.