The Gibbering Gemstone is a miscellaneous crafting material in Diablo III. It is used to construct the Staff of Herding, which is necessary to access Whimsyshire. It has an Item Level of 1 and requires a character level of 1. "It seems to be active but it's difficult to tell." Acquisition[] Map of possible cavern spawns It can be found in the second level of Caverns of Frost, a dungeon located in