October birthstone
The crossword clue "October birthstone" is answered by OPAL, a 4-letter entry. Used 448 times across 47 distinct years; most recently in 2026. It appears in 42 publications in the xd corpus. Every figure on this page comes from the pilot data itself.
The answer
OPAL
4 letters. See every clue for this answer on the OPAL answer page.
Used 448 times across 47 distinct years; most recently in 2026. It appears in 42 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this pilot link to their own answer page.
- TOURMALINE (1 uses in xd)
Other clues for OPAL
Every other clue in this pilot answered by OPAL, most used first.
- Milky gem - used 179 times, most recently in 2026
- Iridescent gem - used 148 times, most recently in 2026
- Fall birthstone - used 76 times, most recently in 2026
Related clues
Pilot clues of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Leave out - OMIT, used 929 times
- Spoken - ORAL, used 725 times
- Burden - ONUS, used 687 times
- Aware of - ONTO, used 619 times
- Killer whale - ORCA, used 553 times
- Approximately - ORSO, used 489 times
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