Amy, the amethyst fairy, does not know what to do when magic amethyst disappears. Is Jack Frost responsible?

Jack Frost is up to no good again! This time, he's stolen the seven jewels from Queen Titania's crown. Without them, the Jewel Fairies can't do their jobs. The magic in Fairyland is fading fast. The magic diamond is missing, and none of the fairies can fly! Their wings have all vanished. Can Rachel and Kristy help Lucy the Daimond Fairy save the day?