Malachite
DEFINITION
A green mineral used in jewelry, intarsia, and as a pigment. Illustrated are some polished pieces, mared by malachite's typical multigreen patterning, and about half of their actual size. Chemically it is green copper carbonate, CuCO3 Cu(OH)2. Related resource: Pigments through the Ages on malachite. Also see azurite and faux.