POL102JR Polyhedroid Agate Specimen Pyramids some with marcasite tips

some with marcasite tips

The "average" material is nodules weighing between 1/2lb and 4lbs

25 inch pieces

One bullet displays a black orb

and was called pietra dura

POL102JR Polyhedroid Agate Specimen Pyramids some with marcasite tipsThis is a specimen featuring dark golden yellow and light and dark blue banded agate. It has a vugg coming from a flow channel down to the center, that goes through to the back of the nodule. It has six faces (including the polished face) with sections of the back showing previously weathered breakage which connects to the vugg. 9. 8 cm x 6. 4 cm x 5. 6 cm 10. 8 oz Polyhedroid Agates were found in Paraiba, Brazil, but are now unavailable. They are