Crossword clues for the word: SARDONYX The word SARDONYX has appeared as an answer to at least 3 crossword clues on different crossword puzzles. Crossword clues for SARDONYX Showing 1 to 3 of 3 results Clue(s) An August birthstone Stone with red and white bands Variety of chalcedony with alternating reddish-brown and white parallel bands