POL115JR Polyhedroid Agate Specimen From Australia and are most commonly brown

and are most commonly brown

Engineering

and it is polished on both sides

Rhodonite polished cabochon featuring shades of pink with a section of solid black

Its banding is in white

POL115JR Polyhedroid Agate Specimen From Australia and are most commonly brownThis is a polished specimen featuring dark blue to black, dark golden yellow, and translucent gray agate with a large opening appearing to come from a flow channel. It has a "tube" which could be a partially closed second chamber. 12 cm x 16. 5 cm x 2. 5 cm 2 lb 14. 8 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