This malachite is from the Katanga Copper Crescent in Katanga, Democratic Republic of the Congo. There are over 100 different mines and diggings in this area with 10 large operations. Local people mine in the closed locations for a long list of mineral specimens including secondary minerals such as malachite. It is a copper carbonate (Cu, C, H) that is found in the oxidation zones of copper ore bodies. This specimen has a jug-like shape that is filled with rolling, botryoidal, and stalactite formations of primary malachite crystals. They are druse in size, gemmy, with an emerald color and have a bright glistening luster. This piece is free of damage and it measures 3 x 2 3/8 x 1 1/8 inches or 76 x 60 x 28 mm.