Instead of his toy was a large realistic looking representation of a penis. Obviously a sex toy. And next to that was a note.
Jon was annoyed, his stone was too valuable to be wasted on a prank like this. He picked up the note and read it.
The Note said: "Sorry I have taken the stone, it is needed. Instead I have given you an item nearly as powerful in its place. It is the Dildo of Desire, it is fueled by sexual energy. Use it to bring yourself to orgasm and anything you desire can happen, anything you desire can be yours. Each use takes an orgasm to work.