Matrix coppers from the Itauz are rather rare, and this is a such a one, with the native copper having grown against a natural "base" of matrix. This is the brushy form of specimen that came out in the last year of production before the pit mine moved past the specimen-producing area - and it will be years before they are back around that part, if at all, from what we hear. 4.1 x 2.2 x 2.1cm