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 ...

The most famous example of patina is perhaps the Statue of Liberty, which was once copper and now is its signature shade of ...

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?

The period of unsightliness can now be eliminated by subjecting the copper to electrolytic corrosion under controlled conditions; after 15 minutes an insoluble patina of good green colour is ...

Later, he was ruined in the copper crash of 1889. At the Statue’s unveiling, in 1886, it was brown, like a penny. By 1906, oxidation had covered it with a green patina. The thin layer of ...

preventing the copper from eroding away. The green stuff is called a "patina." You can think of this as a kind of rust that forms when copper is exposed to the air for a long time. Copper atoms ...