The Birthright Jewels are magical jewels that appear in the animated short series, Descendants: Wicked World. At a certain point, these jewels are bestowed upon the children of Disney Heroes and Villains at a ceremony known as the Jewel-bilee. The jewels belonging to the VKs were confiscated when the villains were relocated. All except Mal's, which was hidden and cursed by her mother until it was found inside a necklace. The curse was later removed from the jewel when Mal used Jafar's Snake Staff and the combined power of the other jewels on it.
Each of the VK's jewels are known to possess unique and powerful magic on their own, but if put together they will give one villain near-limitless power to conquer the land of Auradon. It is shown Freddie's gem can levitate objects, summon lightning, and conjure shards. Evie's can produce a concussive blast to knock people away. Mal's jewel turns her evil, and whoever holds it will have control over her. AKs receive their jewels once they show and prove their goodness, independent of their grades at school.