ethereality

/ɪˌθɪriˈælɪti/
noun
  1. The quality of being extremely light, delicate, or spiritual; seeming not of this world.
    • Her dress had an ethereality, with sheer fabric that seemed to glow.
    • The ethereality of the music made the audience feel as if they were floating.
    • The photographer captured the ethereality of the fog over the lake.