Serayn or Serein: How To spell?

The word Serayn is misspelled against Serein, a noun meaning "A mist, or very fine rain, which sometimes falls from a clear sky a few moments after sunset."

Word contains consecutive vowels 'EI' in between alphabets ser & n is misspelled as 'AY'
Wrong Spelling:  ser-ay-n 
Correct Spelling:  ser-ei-n 
Explore spell check of Serein to spell without errors.