[ in an incredible plot twist, that is not what he means. he can tell that she isn't being genuine, and that makes him even more concerned. ]

That depends on what we can find, though granite is the most obvious choice. Thankfully, it's incredibly common in these caves.

[ he'd normally reserve much more time to talk shop, but he's more focused on something else. ]

You seem to be keeping yourself quite busy with the farm lately. Aside from that, how have you been?