POL641 Polyhedroid Agate Tigereye 15cm x 7cm polished surface

15cm x 7cm polished surface

This polished specimen displays tan

and shows both banded and moss agate

First is from top US agate collector Pat McMahan

POL641 Polyhedroid Agate Tigereye 15cm x 7cm polished surfaceThis polished Polyhedroid Agate specimen features crystalline filling with a small open vug in the center. Dimensions: 4. 8cm x 3cm (2. 5cm deep) Weight: 1. 8oz Polyhedroid Agates were found in Paraiba, Brazil, but are now unavailable. They are a unique formation of agate, featuring naturally flat surfaces at a variety of different angles. They are believed to have formed in the negative spaces between large crystal blades of calcite or aragonite, and