This is the piece with the brightest luster of the lot, truly metallic and gorgeous, with a contrasting red cuprite octohedron capping the termination of this arborescent copper cluster. The coppers here are SHARP, some showing a distorted form that is almost, but not quite, cubic. I think the overall look of the crystal habits, the cuprite atop, and the fact that this is just plain good by any standard all combine to make this a particularly important Russian copper specimen from these new finds.