This hubnerite specimen is a large beast of a crystal cluster, perched upright on quartz matrix. It is 800 grams mass. It is nearly pristine with no damage of any significance at all, and is complete all around , 360-degrees. The lustre is waxy, and metallic at the same time, really unusual. The color is a dark reddish-black, with red highlights when lit up strongly. According to Rock Currier, this is from the famous finds prior to 1980, probably from the late 1960s. These finds established Mundo Nuevo as the premier locality for the species at this time. This remarkable specimen is certainly one of the most important examples of its species from this locale (as confirmed by Rock Currier , who should know - and who brought out so many in the old days!). In fact, both he and I would go further and state that, for overall combination of textbook morphology, size and quality, this is one of the best examples of its species from ANY locality in my experience and in his far greater experience. For the textbook crystallography, and how dramatically it displays, upright like a sculpture, this is simply one of my favorite South American or "ugly black rock" specimens I have personally offered EVER on this site - even though far from the most expensive. But, here i think, you get a lot of import for the dollar.