POL132JR Polyhedroid Agate Specimen Spheres This agate came from one

This agate came from one of Gene's collections of rough slabs for intarsia use that he found from years ago

and the long smoke trail inspired a commissioned stamp on the 10-year anniversary of the event - painted by an artist who witnessed the event

The rough nodules usually have a bumpy exterior

At a certain angle of this piece

and examples of individual pieces

POL132JR Polyhedroid Agate Specimen Spheres This agate came from oneThis 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 6. 7oz 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