Polyhedroid Agate

This is a beautiful large Polyhedroid agate from Brazil. They form between Calcite crystals to form the poly sided agate.

It is a beautiful Poly with black and blue silica and no fractures. It has a tiny roughness on the left edge and it has a mirror polish.

I only had three photos that looked good at the end of the session. All agates need good light and I took the photos in different

light so you can see the difference.