If you want some unique dice for your collection, look no further than the crystal shaped dice by Crystal Caste. Admittedly, these dice won’t roll as true as standard dice, but they’re definitely a fun kind of die to have. Their novelty was even used in a Millenium edition of Monopoly by Hasbro (without permission which led to a patent infringement lawsuit that Crystal Caste won). They come in the standard d4, d6, d8, d10, d12, d20, and d10 percentile.
While you can get them individually to suit your needs, they are also available in pre-packaged sets of 7 crystal dice, a mix of crystal and standard polyhedral dice, or in multiples of crystal d6 dice.
No matter what you decide to go with, give these crystal shaped dice a roll and let us know what you think.