Jewel of Jerrimore is a legend that can trace its origins to the third century Before Entharion the Wise in the northlands of Frobozz. This jewel is mostly a star sapphire, said to have been the greatest treasure of the Mage of Jerrimore. As he lay upon his deathbed, believing that his enemies poisoned him, he put a curse on the Jewel and its possessors. In the year 883 GUE the First Dungeon Master entered the iron mine to take the sapphire, using it as part of a spell that summoned a key to Megaboz's trunk.