What is the answer to "October birthstone" in the NYT Midi Crossword?

The answer to the NYT Midi Crossword clue "October birthstone" is OPAL (4 letters).

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October birthstone NYT Midi Crossword Clue

Down clue · from the May 18, 2026 puzzle

Stuck on “October birthstone” from the NYT Midi Crossword? Here is the verified answer:

Answer

OPAL

4 letters · Down · last seen May 18, 2026

1A"___ ! ... I Did It Again" (Britney Spears hit)4 5AStrike zone assessors4 9AStudy for the SAT, say4 10ABrand of party cups used in flip cup4 11AStayed chill9 13ATattoo removal option5 14AGo blond, perhaps3 15AFlow barrier3 17AEnjoyed an 18-Down, say3 20AWhat two fingers up might symbolize5 24AConcept that's above criticism, metaphorically9 26APotential post-exercise symptom4