He makes a face but doesn't comment further on the pears.
Turning the coral over in his hand a few times, he continues smiling. "If it could ever grow...but that little tingle, that just means it's definitely TARDIS coral. Just a little hum of...well, life. It's not dead coral, I mean." He's hesitant to admit that he's curious if any of his methods would work to encourage growth.
He hands it back. "Well. Anyway. So..." he looks around the room, suddenly awkward again. "Lots to...ah...think about." He gives Ianto a timid smile.