Talk:My Little Pony Equestria Girls: Rainbow Rocks/@comment-26802628-20141021132451/@comment-16811522-20141024154708

I think it's like the pendant in the second half of season 3 on Once Upon a Time, worn by Zelena and the Oz witches (Good Witch of the North, East and South). Their power is put into the necklace, and without it, they're powerless, but originally it came from their very being/soul.