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POL132JR Polyhedroid Agate Specimen


This polished Polyhedroid Agate specimen features alternating bands of quartz and banded agate in shades of light blue and grey, black, and translucent yellow, which opens to a vug in the center.

6.1cm x 5.2cm polished surface, 5cm 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.