The Diamond Princess Saves the Day

In the Jewel Kingdom, four girls rule: Roxanne is the Ruby Princess, Sabrina is the Sapphire Princess, Emily is the Emerald Princess, and Demetra is the Diamond Princess.

Some of Princess Demetra's subjects have become trapped inside a mountain. She must risk everything - including her crown - to rescue her subjects!

A full sheet of holographic stickers in every book!