Malachite's uses are wide-ranged including: gems, carvings, beads, paint pigment, and minor copper ore extraction. Over 4,000 years ago mining of Malachite in Egypt and Israel was one of the first sources for copper ore extraction and is even used in cosmetics. Malachite's high copper chemical makeup makes it toxic to inhale or ingest. So during cutting and polishing one has to take precautions, but is perfectly safe to handle when finished.
Malachite is a gem that has light and dark green banded areas. Many beautiful specimens of Malachite contain special combinations with other minerals, such as Azurite Cuprite, or Chrysocolla. In lore, it's worn to detect impending danger and is assumed to break into pieces when danger is present. It's considered the guardian stone of travelers. Also, it promotes inner peace and hope.