They were still warm. Zoe mulled over the penny first, but it was just an ordinary, slightly molten penny—it wasn't as interesting as the glass.

Parts of the glass were as clear as a window. Other sections looked like dried, caked-on sand. And still others had a sort of rainbow luminescence. Most parts felt grainy and rough, but some felt smooth. Zoe wondered if its root-like shape was the same as the shape of the lightning bolt that made it. She also wondered how transparent it was.