Toronto Police are looking for a woman who stole a rock written on by Yoko Ono from an installation at Gardiner Museum on Friday. It is worth $17,500 and has “Love Yourself” written on it according to The Toronto Star. The stone is part of a three-part interactive installation titled Yoko Ono: The River. According to the museum’s website, “Visitors are invited to pick up a stone and hold it, concentrating on the word, and then placing the stone upon the pile of other stones in the center of the room.” Gary Long from the Toronto police told The Star that the suspect “just picked it up and walked away with it.”