Hm well if it's not interactive.. probably not? You can use it a "prop" (the crystal), but if you can't talk it in-game, then it shouldn't be able to talk to you.
I guess we're looking for things that will follow what we have in Fiesta closely. I don't think we can classify a stone/crystal/etc as an NPC since it's not a character, just an object.
__________________
=)
|