Vaunstone or Veinstone: How To spell?

The word Vaunstone is misspelled against Veinstone, a noun meaning "The nonmetalliferous mineral or rock material which accompanies the ores in a vein, as quartz, calcite, barite, fluor spar, etc.; -- called also veinstuff."

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