Third-hardest mineral 7 little words

Looking for the answer to the “third-hardest mineral” clue? You’ll find it right below as part of the 7 Little Words December 31 2025 daily puzzle answers! 7 Little Words, created by Blue Ox Family Games, is a hugely popular word game with over 10,000 levels to explore. Each puzzle includes 7 clues, 7 mystery words, and 20 letter tiles. Your task? Solve the clues and piece together the letters to reveal the answers. If you’re stuck on “third-hardest mineral”, no worries—we’ve got the solution for you below. Thanks for visiting, and see you again with the next puzzle update. Have a great day and happy solving!