The Delusion Stone (Zoe)

This stone looked nearly the same, but it wasn't. It was the Delusion Stone, which fooled the wisher (and only the wisher) into believing that their wish had come true. Zoe walked towards the spot where she usually met up with her friends before school. And as she approached Athena, she took out the stone, completely unaware that it wasn't the same stone she inherited from her grandfather.