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POL118JR Polyhedroid Agate Specimen


This is a polished specimen featuring shades of blue-gray agate, white, and yellow banded agate, with an opening in the center, a band of quartz crystal, yellow plumes, and a healed partial fracture with yellow staining.

16.3 cm x 13.8 cm x 9.5 cm
6 lb 15.2 oz

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

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