Here is the answer for the: Third-hardest mineral 7 Little Words. This 7 Little Words clue was last seen on December 31 2025 7 Little Words Daily puzzle. The answer we have for Third-hardest mineral has a total of 8 letters.
| • | Native alumina or aluminium sesquioxide, Al2O3; corundum; esp., the blue transparent variety of corundum, highly prized as a gem. |
| • | The color of the gem; bright blue. |
| • | Any humming bird of the genus Hylocharis, native of South America. The throat and breast are usually bright blue. |
| • | Of or resembling sapphire; sapphirine; blue. |
There are a total of 6 clues in December 31 2025 crossword puzzle.
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