[Of course it bothers him and Larry knows why but how can Freddy here express what someone like Larry hshould do? He has a right to his cut, he worked hard and bled harder for it. In that world, the diamonds are his. Not in Freddy's world though and that just goes back to the crux of this problem.]

Yeah it fuckin' bothers me Larry. It don't bother me if you keep'em, that's your business. [That's been his business for years right?] But I can't take'em, I can't use'em. As long as they're with me they're goin' back where they came from. [If they ever leave this place. He swallows again in preparation for saying the words.] Because I'm a cop, because they're part of a bust op.

[Just to make it clear, Freddy doesn't want Larry to think moral or ethical judgment weighs heavily on his decision. Not keeping them doesn't make him a better person, keeping them doesn't make Larry a worse person in his book.]