is Floyd's chin granite?

You're welcome. I disagree about his chin being glass though. I think he has a decent chin even though he doesn't get hit that often. His head is absolutely massive compared to the rest of his body. If you caught sight of his silhouette you'd probably think someone had put a large water melon on their head as part of a practical joke. He has the noggin of a cruiserweight on the body of a smallish middleweight so in a way it's kind of embarrassing that he's been badly hurt or on the verge of being put to sleep by blown up lightweights and junior-welters.