Over time, copper sinks, pots and pans may lose their luminance. They can also turn spotted, brown or black. This process is called oxidation, and it occurs when air impacts the metal. If water or ...

“A copper sink is usually unsealed because it’s constantly in contact with water," says McAllister. "A copper pot, on the other hand, is usually shiny and sealed.” Checking for shine is the ...

Louisa writes - Copper pots are often heavily corroded when they are recovered from Scottish sites. However, like many other objects from Bar Hill fort on the Antonine Wall, this is a beautifully ...