This clue appeared in the NYT Crossword on Tuesday, March 31, 2026 (2 Down). The answer is hidden below until you want it. Tuesday puzzles are a step up from Monday but still mostly straightforward.
Answer length: 4 squares
First letter
O _ _ _
First and last letters
O _ _ X
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About the answer
ONYX as a word: (mineralogy) A banded variety of chalcedony, a cryptocrystalline form of quartz; A jet-black color, named after the gemstone.
ONYX has been an answer 2 times in the NYT Crossword and Mini since November 11, 2025.
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