Copper Copper Cu Hardness: 3 Isometric Copper Copper and Dolomite after Aragonite from Corocoro District, Bolivia USD32.00 Native Copper specimen from Michigan USD38.00 (2) Native Copper clusters from Zhezkazgan Complex, Kazakhstan USD40.00 (2) Native Copper clusters from Zhezkazgan Complex, Kazakhstan USD48.00 (2) Native Copper clusters from Zhezkazgan Complex, Kazakhstan USD50.00