Dice MuseumBruce Dice Mineralogical Museum, named in honor of Bruce Dice, a 1984 Calvin alumnus, has a rotating display of more than 300 unique mineralogical specimens collected from around the world. It includes gold nuggets, copper leaves, 100-million-year-old fossils and an interactive ultraviolet case. You can visit in the North Hall Building on Calvin's campus during their limited open hours (more info on their site)