The Star Blue difference — Resolving Verdigris
Verdigris refers to a chemical process applied to copper in order to create a blue-green color. Specifically, it references copper acetate, a pigment which develops as a reaction between copper and acetic acid.
The problem with verdigris patina standards, is that it can leave the material in a soluble state. Zahner patina technicians have mastered the process of taking verdigris to an insoluble state, ensuring that the patina is fused to the surface. This is the Star Blue surface, a chemically stable patina produced safely using rapid-patination offered by A. Zahner Company.