Crossword clues for the word: CHERT The word CHERT has appeared as an answer to at least 12 crossword clues on different crossword puzzles. Crossword clues for CHERT Showing 1 to 12 of 12 results Clue(s) Compact mineral Dull-colored flintlike quartz. Fine-grained silica Flint-like rock. Flintlike quartz. Flintlike rock Flintlock rock Rock found in limestone beds Rock like flint Rock made mainly of silica Silica Variety of silica