Malachite SphereA sphere of deep green that seems to hold its own interior weather. MalachiteCu(CO)(OH)is a copper carbonate hydroxide with Mohs hardness 3. 54, forming where copper rich groundwater reacts with carbonate rock in the oxidized zones above copper ore bodies. Its signature banding reflects the layered nature of that growth: each band a pause in the mineralization cycle. Major producing regions include the Democratic Republic of Congo, the Ural Mountains