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POL138JR Polyhedroid Agate Specimen


This polished Polyhedroid Agate specimen has a flat cut back. It features bands of agate in shades of light to dark blue-grey, translucent, and dark yellow that opens to a vug.

7.5cm x 10.3m polished surface, 3cm 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.