Bildstaun or Bildstein: How To spell?

The word Bildstaun is misspelled against Bildstein, a noun meaning "Same as Agalmatolite."

Word contains consecutive vowels 'EI' in between alphabets bildst & n is misspelled as 'AU'
Wrong Spelling:  bildst-au-n 
Correct Spelling:  bildst-ei-n 
Check more misspelled words of Bildstein to spell it correct.