The Fireglow is a key item in Kingdom Hearts.
After the Land of Dragons was swallowed by the Heartless. Mushu was transformed into the the Fireglow Gem and fell into the hands of Maleficent. Sora ventured into Hollow Bastion some time later and fought Maleficent in the form of the dragon. After her defeat Sora then receives the Fireglow summon gem. This item can be taken to the Fairy Godmother, Sora then can learn the ability to summon Mushu.