Volcanic rock used as an abrasive and polishing agent

Let's find possible answers to "Volcanic rock used as an abrasive and polishing agent" crossword clue. First of all, we will look for a few extra hints for this entry: Volcanic rock used as an abrasive and polishing agent. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.