Blackfire was given the Jewel of Charta by Glgrdsklechhh, a slime/elephant-like alien creature, in a secret deal which involved Glgrdsklechhh getting married to Starfire. Blackfire tricked Starfire into marrying the alien creature, so that she could claim the Jewel of Charta from Glgrdsklechhh, so that she could rule Tamaran as a ruthless tyrant, and because no one would even dare challenge her with the mighty jewel in her possession.