Resting on the edge of the stone set into the table, there was a tooth. Palamedes picked it up. It was a premolar, with long and horrible roots: it was brown with age. He handed it to Harrow, who gently unfolded it in the way that only a bone magician could and in the way that always made Gideon’s jaw hurt. She turned it into a long ribbon of enamel, an orange with the skin taken off and flattened, a three-dimensional object turned two-dimensional.

Gideon the Ninth - Act Four, Chapter Thirty-Two