Meaning and history
This name comes from the English word for the gemstone onyx, a variety of chalcedony that may be black, red, or other colours. The word is derived from Greek ὄνυξ (onyx), meaning “claw” or “nail.”
Onyx moved from #358 to #365 for boys between 2024 and 2025. Its highest annual birth count came in 2023, with 1,079 births.