Audrey, working for a "black" magical jeweler, is a noble lady in name only, living a lackluster life. Born with absolutely no magic power necessary for appraising magical gems, she couldn't become the appraiser she dreamed of, and her treatment at the workplace is at the very bottom. On top of that, with her engagement to the guild master broken, she is truly at the rock bottom of her life... Then one day, a Crystal (Quartz) spirit appears before the bewildered Audrey...!? Having formed a magical contract with the spirit, Audrey's life now begins to move. Appraising magical gems and using incredibly powerful spirit magic is a piece of cake! She excels in her dream job! The free and wonderful independent life of magical gem appraiser Audrey begins!