Pearl used to be a Pearl for all four diamonds! she started out as white diamonds pearl that explains her gem placement and her overall appearance. Next, she was yellow diamonds pearl that explains her fighting skills and her control of the situation at most times. Next, she was blue diamonds pearl that explains her uncontrollable emotions and the way she cries but tries to hold it in, also her despair in herself when she's not doing a good job in a task, it also explains her spear firing lasers, blue diamond has orbs that fire lasers. and lastly, she was pink diamonds Pearl it explains her caring and kind personality when dealing with Steven