Pink Diamond was a Homeworld Gem and a member of the Great Diamond Authority that continued to rule over the Gem race in her absence.  Originally in charge of Earth's colonization, she took the form of a Rose Quartz after her fellow Diamonds refused to allow her to abandon the colony and spare life found on the planet. As her plans escalated into an all-out war, Pink faked her own shattering in an effort to finally drive Homeworld away from Earth, taking on Rose's appearance as her default form
