Islamic Interpretation of Dreams (Ibn-i Sirin):

(Polishing) In a dream, a gem polisher represents the polisher of the hearts, a wise man, a teacher, a shaikh, a sage, a refiner of characters or a 186 gnostic. On the other hand, a gem polisher in a dream may also represent evil, belligerence, hesitation, or travels.

A stone polisher in a dream represents someone who offends or injures people’s feelings with his words.