What is the answer to "Third-hardest mineral" in 7 Little Words?

The answer to the 7 Little Words clue "Third-hardest mineral" is SAPPHIRE (8 letters).

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Third-hardest mineral 7 Little Words

From the December 30, 2025 daily puzzle

Answer verified · updated every morning

Looking for the answer to “Third-hardest mineral” from 7 Little Words? You are in the right place — here is the verified solution:

Answer

SAPPHIRE

8 letters · appeared December 30, 2025