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Patina Copper Sheets [puh-tee-nuh|kop-er|sheet]
The patination process for copper is a natural progression over time. As copper ages it grows a colored layer to protect it from corrosion called patina. This layer is caused from oxidization and is often blue or green naturally, known as acquired patina. With the help of science, however, manufacturers looking to replicate the process for aesthetic reasons use chemicals to manipulate the colors and produce everything from red to black. This is called applied patina or distressing.