Magic Crystal

The Magic Crystal is an object from Barbie of Swan Lake. It is a magic gem that stayed glues to a stone and nobody could take it off. It's legend says that the person who is able to free the gem can defeat Rothbart. That person happens to be Odette who firstlyis scared and wants to leave home. When Rothbart transforms her into a swan the Fairy Queen puts the gem in a tiara and gives it to Odette so it could protect her from any spell. The gem is also the key to open the enchanted book of the forest.