Yeah.

[ he pulls a ballpoint pen out of his pocket -- capped, black ink, looks like the kind you can buy by the bag, totally unextraordinary except for the ancient greek script engraved down one side -- and twirls it through his fingers. ]

Doesn't look like much like this, but the blade's solid Celestial bronze. It won't hurt mortals, but I've used it against monsters and immortals plenty, and it can cut through most things.