This is one of the largest AND most dramatic coppers I have ever seen in museums or private collections for this style - a style so characteristic of this mine that it is immediately identifiable to a single mine in a manner so few Michigan coppers are. The intricate networking of the copper crystals is mesmerizing. I have always loved this piece for the dramatic spiral of the major central spinel twin, which curls up through the specimen with other crystals around it and is then cradled at the top in a nest of intricately crystallized smaller copper crystals. That central spinel twin is complete, from top to bottom, with both terminations ticking out! This is a MAJOR copper of a style seldom seen beyond miniature sized specimens, and I cannot emphasize enough the display impact of the 6 inch twin in the middle, in person.