It's fine. I've got no more reason to. Looks like you really are made of diamond, underneath that powder. I'm wondering how you can move and think at all, but the answer to that is probably beyond my comprehension.

[ Meaning, it's got to be some magical explanation unique only to Dia's world, that even Rohan knows he wouldn't be able to grasp if explained to him in detail. Curiosity sated, he lets the gem go, pocketing his key. He's also not going to feel sorry for leaving that thin line where the powder's been scraped away. ]

You probably already know this, but on my world, a diamond was nothing but an indestructible, overpriced rock.