Malachite is a copper carbonate hydroxide mineral. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses. Explore Art By God’s collection of Malachite from Congo at affordable prices in a variety of colors and sizes. Gorgeous Malachite carvings and sculptures for sale. Malachite Sculptures, Malachite carvings, Malachite specimen, Malachite rock, Malachite display.