You have seen the fine crystallized coppers that have until recently been coming from this mine in Russia, but here is a specimen with sharp cuprite crystals (to 0.6 cm) embedded amongst the branches of copper! What is more, the specimen sits on a natural "base" of matrix, very uncommon for these Itauz pieces. A very uncommon and desirable specimen. 5.5 x 4.0 x 2.2cm