He took the chisel from his jacket and handed it over. She lined it up against a crystal; then, using the butt of Skulduggery's gun, she hammered at it, barely making a scratch.
”Hold it in place," Skulduggery told her. He flexed his fingers and swung his hand, and a concentrated blast of air hit the chisel like a pile driver. A chunk of crystal flew free, a little bigger than the one that had been housed in the Scepter.