Malachite

Malachite is a green carbonate hydroxide of copper and makes a great stone for pendants and earrings as it is a soft stone. 

The name Malachite may come from the Greek word malakee, or malache, signifying the resemblance of Mallow leaves, or from the Greek word malakos, meaning soft. Being a carbonate of copper, Malachite is sometimes intergrown with Azurite, forming Malachite-Azurite, or with Chrysocolla, forming Malachite-Chrysocolla. 

Well known to ancient Egyptians, Malachite mines were in use between the Suez and Sinai as early as 4000 B.C. It was also popular with the ancient Greeks and Romans, for jewelry, ornaments, and in powdered form, for eye shadow. In the Middle Ages, Malachite was believed to protect against the "Evil Eye" and to cure various stomach ailments. Russian czars used Malachite for ornaments and paneling for their castles, and intricate inlay work