The Water Gem is the only one of 2 currently unobtainable Warden Keystones. It was supposed to be collected after the final Barnacle Cove quest was completed, but it wasn't ever made. Therefore, nobody has been to the Academy. Retrieved from "http://prodigy-math-game.wikia.com/wiki/Water_Gem?oldid=23574" Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.