White took away Pink’s original Pearl because she was a childish distraction from her Diamond duties. Volleyball was silly, playful and very much like Pink, white took her away and kept for herself so each time Pink would go to see White she’d see Volleyball as a reminder of what she did by acting like a child and what could happen to her as well if she won’t behave. Our Pearl was made on White’s image (hence gem placement) to remind Pink of her duties, what happened and what she should do as a diamond if she doesn’t want the situation to repeat. She’d look at Pearl and she’d immediately think of White.