Is this not COOL!? It is a large and super-showy example of a very unusual crystal form for calcite, difficult to describe, but basically doubly-terminated, golden crystals (to over 10 cm!!) that look as if they are composites of dozens of smaller crystals. The calcites are completely exposed on a dramatically contrasting matrix of dark fluorite that really lends them pizzazz. The fluorite is composed of flat shards, out of an Escher painting, one atop another and cemented together by calcite. On the back is a minor amount of limestone matrix, as well. Basically, the piece is just dramatic and weird....and quite good, I think. There are crystals on both the front and back. This wonderful specimen came out of the collection of Tom Wiesner. 18.5 x 16.9 x 9.8 cm