These finishes are pre-patinated at the Aurubis mill to create the green/blue/turquoise patina that naturally develops over time with exposure to the environment. The pre-patination process ...

Over time, copper oxidizes slowly and naturally. Gradually, that bright orange shine fades to red then to brown and finally ...

The paint was shiny, tight, flat, while the ageless patina of the copper had a texture like extremely fine velour. Some of it shaded to a green-black, parts were dark blue, parts olive.

Through a series of oxidation reactions, a thin, green-blue layer known as a “patina” forms over copper as it is exposed to air. Not only did this process impart a markedly different color ...

Copper has a beautiful reddish hue, but when exposed to the elements, the metal undergoes a series of chemical reactions that make it turn green. But why does this color transformation occur?