A gem variety of Chrysocolla known as Eilat Stone is a greenish-blue mixture of Chrysocolla, Turquoise and other copper minerals such as Malachite from the ancient copper mines north of Eilat, in the southern Israel. Much of the material sold as Eilat Stone is in fact not really from Eilat but originates in other localities and is falsely labelled.
Chrysocolla is natural and not treated or enhanced.
Chrysocolla is found worldwide, though significant sources include the Congo (Zaire), Israel, Australia, Peru, Chile, Mexico, and in the U.S. in Arizona.