The Inverted Stone (Zoe)

This stone looked nearly the same, but it wasn't. It was the Inverted Stone, which granted the *opposite* of the wish spoken. In the light, it looked just like the normal stone, but once out of the light, its true appearance became noticeable: milky white, rigid and dull. 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.