"The Necklace" short story by Guy De Maupassant is also concerned with humanity and spirituality and nature on a deeper level.
The necklace was thought to have value, but turned out to be fake and valueless, possibly like the ambitions of shallow social climbers who value the materialistic things of this life over spiritual aesthetic ones.
Man, and humanity,is flawed - as the necklace turned out to be.
Nature can be stunningly beautiful and awesome when it is genuine such as the elements of a genuine priceless diamond. When it is copied,or imitated, it suddenly becomes "paste" - cheap and worthless and tacky, maybe like the morals of the superficial "nouveau riche."
The Loisels risked everything of integrity that they had, even though it didn't seem much to them, for nothing.