Copper is named for one of the important places it was mined – Cyprus.
We get the word copper from the Latin cuprum or cyprium: metal of Cyprus (from Greek, Kyprios).
Copper salts give minerals a blue or green colour and were often used as pigments… Paris Green and Egyptian Blue are examples.
(Image: Detail of copper cladding, the de Young museum, San Francisco. Photo, C. Reddaway)