A mineral...of great hardness that...is valued as a source of gems

Let's find possible answers to "A mineral...of great hardness that...is valued as a source of gems" crossword clue. First of all, we will look for a few extra hints for this entry: A mineral...of great hardness that...is valued as a source of gems. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.