Well, these are the dice that Hasbro admitted infringing! When you hold
them in your hand you'll be able to see why. Beautiful pearlescent
crystals are wonderful to the touch and this shape especially has an
interesting aspect to them. At tradeshows we've noticed
that when people handle them they always buy them! Crystal
dice covered by US Patents #5,938,157; #6,318,720; #D455,462.