The concept is a property of some minds (human minds), thus its a property of the natural world.

This doesn't make it a fundamental property of the natural world. I suspect it's just a label we use for a certain fuzzy class of emotional responses. I'm skeptical that it's all that different from other emotional responses. Consider that humans also share a concept of "creepiness". Do you also have faith that "meta-creepiness" would be creepy to all sentient beings capable of being "creeped out"? It may be tempting to ascribe your reaction to something like a house centipede to a fundamental property of the critter, but "creepy", like "beautiful", seems firmly situated in the class of 2-place words.