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POL135JR Polyhedroid Agate Specimen


This polished Polyhedroid Agate specimen features an outer clear crystal ring that leads to light blue-gray and black banded agate, which opens to a vug with tints of translucent yellow. 

7cm x 6.8cm polished surface, 7cm deep

Polyhedroid Agates were found in Paraiba, Brazil, but are now unavailable. They are a pseudomorphic formation of agate, believed to have formed in the negative space between large crystals of calcite or aragonite. They uniquely feature naturally flat surfaces in a variety of angles.