Garnet ( Garnet in Spain) is one of the protagonists of Steven Universe . She is the current leader of the Crystal Gems and is the fusion of Ruby and Sapphire . Along with the other members of the team, she is one of the few surviving Gems from the rebellion . After the war, she swore to protect the Earth from the ravages that the Homeworld Gems caused approximately 5,000 years ago. After Rose Quartz gave birth to Steven , Garnet began training him alongside Pearl and Amethyst .