CritStones Liquid Core Dice D20 Moonlight Mystery 3 cmBig 33mm D20. Go big or go home! These d20's are substantially bigger than your normal d20. They are truly a conversation piece and something you can use for those special rolls! Dice Features Liquid Core Resin Dice: Made from premium resin, this d20 is casted by hand and have sharp edges. Inside it has a liquid fluid core with sparkling particles in them. Balanced Rolls: This d20 is carefully balanced to ensure fair play, they clear numbers on them