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 ...

Patina adds character ... such as bronze turning green," says Eileen Fulton, a restorer for O'Sullivan Antiques in New York City. The term is commonly used in relation to copper or bronze pieces ...

Over time, the copper ages from the hue of newly minted penny to auburn, then to a variation of green. For those who want to expedite the patina process, Dudoussat recommends spraying the copper ...

The cleaning methods for these water channels vary depending on whether you want to keep your copper's patina or if you ...

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 ...

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 ...

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 ...