Unisex name · Greek
Onyx
“black gemstone”
Vibes
Explore Onyx further
Similar-feel alternatives, or middle-name candidates that pair well with Onyx — both ranked by the same scoring system (vibe overlap, syllable rhythm, origin compatibility).
About the name
Onyx is Greek — onux, "claw, fingernail" — the layered black gemstone the ancients carved cameos from, believing it held courage; the myth says Cupid clipped Venus's nails and they turned to stone.
Onyx has entered the American top 500 for boys with unisex use — the gem wave's darkest entry.
One syllable, x-finished, gallery-black. It pairs well with warm middles (Onyx James, Onyx Rose). On our vibe map it is Modern Minimalist in Dark Academia jet with Y2K-chrome edge — the black gem, claws included.
More Greek names
Onyx sits in our Greek set — these share its roots.
All Greek names →Onyx — common questions
Is Onyx a boy or girl name?
Onyx is a unisex name — it is given to boys and girls alike, and we list it that way (Greek origin).
What does the name Onyx mean?
Onyx means “black gemstone” of Greek origin. Onyx is Greek — onux, "claw, fingernail" — the layered black gemstone the ancients carved cameos from, believing it held courage; the myth says Cupid clipped Venus's nails and they turned to stone.
Where does the name Onyx come from?
Onyx is Greek in origin. Onyx has entered the American top 500 for boys with unisex use — the gem wave's darkest entry.
How popular is Onyx?
Onyx ranked #365 in US Social Security Administration data for 2025, which makes it familiar without being crowded.
Bring the name into the room
A couple of nice things named Onyx you might want for the nursery.