From a mine that probably hold the world record for the sheer tonnage of mineral specimens produced, there is this very unique thing! There is something very "architectural" or even "modern art-ish" about this piece.  It is not your standard cube, but rather a sort of heart-shaped group of rectagunlar prisms that are not alinged-- then there is a completely random crystal protruding from the bottom edge at a totally different angle, on a completely different plane. Some markings on the back where other crystals were once present, displays perfectly from the front.