White Diamond is a Homeworld Gem and the leader of the Great Diamond Authority that rules over the Gem race. She holds supreme authority over all Gems, including her fellow Diamonds, and is seen as a being beyond the rest of her kind. White Diamond hadn't left the Gem Homeworld in eons and remained secluded inside her ship until she left Homeworld to help Steven Universe heal the corrupted Gems. After she had taken control of the Crystal Gems along with Blue Diamond and Yellow Diamond, Steven had to change her mind. She made her debut in "Legs From Here to Homeworld".