Onyx

/OW-N-Y-K/

Unisex ChristianAtheist English origin AmericanBritish

Black gemstone, claw — Onyx (Greek ónyx 'claw, fingernail') names a child after the deep black gemstone, used in jewelry and ritual since antiquity. A modern surging unisex name.

See Onyx scored for your family

Meaning & origin

Onyx is a unisex's name of English origin, traditionally used in Christian families. The name means "Black gemstone, claw — Onyx (Greek ónyx 'claw, fingernail') names a child after the deep black gemstone, used in jewelry and ritual since antiquity. A modern surging unisex name." and belongs to the Beauty cluster — names that carry grace, elegance, and aesthetic wonder.

Beyond its Christian heritage, Onyx is also used in Atheist traditions, reflecting how this name has traveled across cultures.

Common among American, British, Greek families, Onyx carries cultural weight that goes beyond its dictionary definition — it's a name with a story and a community.

Numerology of Onyx

Numerology assigns each name a single-digit destiny number by summing its letter values. Different schools use different mappings — NameRoot computes both so you can see how Onyx resonates in either tradition.

Pythagorean
6
nurturing and family devotion
Chaldean
9
compassion and humanitarian service

How Onyx sounds

NameRoot scores the phonetic fit of every name against the sound of your last name. The pronunciation of Onyx breaks down into 4 phonemes: /OW-N-Y-K/. In the app, you'll see how those sounds flow with your family name across rhythm, stress, and consonant clusters.

The six signals, applied to Onyx

NameRoot scores every name across six independent dimensions. Here's how Onyx maps to each — install the app to see the full compatibility score for your specific family.

01 — Birth Star
Nakshatra match
Enter your baby's birth date in the app and we'll compute the nakshatra compatibility score.
02 — Numerology
Destiny alignment
Pythagorean and Chaldean life-path calculations (destiny 6) matched against your family's own numerology profile.
03 — Phonetics
Last-name fit
Rhythm, stress, and consonant clusters measured with IPA to see how Onyx flows with your family name.
04 — Meaning
Beauty
Onyx belongs to the Beauty cluster — names that carry grace, elegance, and aesthetic wonder.
05 — Cultural & Tradition
Christian
As a Christian name, Onyx carries religious and cultural weight scored against your family's heritage — plus grandparent-name matches, saint's-day alignment, and generational naming patterns scored against your family tree.
06 — Uniqueness
Popularity balance
How common Onyx is today versus historically — finding the sweet spot between familiar and forgotten.

Names similar to Onyx

If Onyx resonates with you, these names live in the same world — drawn from the same tradition, sharing the same meaning, or echoing a similar sound.

From the same tradition

Other Christian unisex names, common in American families

Luca
Light-giving, the Italian form that crosses gender boundaries with effortless Mediterranean grace — Luca is Luke softened by Italian vowels into a name equally at home on a son or a daughter. It carries the warmth of southern European sunshine, the artistic heritage of a culture that elevated beauty to a moral principle, and the international ease of a name that needs no translation
Riley
A major American cross-gender favorite with very strong current household normalization
Nico
Victory of the people, compressed into a name as quick and bright as a struck match — Nico is the pan-European short form of Nicholas and Nicole, carrying the Greek concept of popular triumph in two vivid syllables. It sounds at home in Rome, Amsterdam, and Buenos Aires, a name that belongs to no single country because it belongs to the spirit of celebration itself
Skylar
From Dutch 'Schuyler' (scholar, shelter). American adaptation. Used for all genders since 1990s

Sharing the same meaning

Other Christian unisex names from the Beauty cluster

Pari
From Persian 'pari' (fairy, angel, supernatural beauty). Persian mythology. Cross-religious in India.
Teagan
Little poet, from the Irish Tadhgan, a diminutive of tadhg meaning poet or philosopher, and read also with the sense of beautiful. An Irish name carried widely into English use, it joins the small endearing form to the honoured figure of the bard, naming the bearer a maker of verse.
Leighton
A settlement by the leek garden or herb meadow. From the Old English leac (leek, plant) and tun (enclosure, town), it began as a place-name and surname before crossing into given-name use, where its two-beat flow now reads gracefully for a child of any gender.

Names that sound similar

Christian unisex names that open with the same syllables as Onyx

Oakley
Oak meadow, the clearing in the ancient forest where the strongest trees meet open sky — Oakley names a child for the boundary between deep woods and sunlit field, the place where the sturdiest English tree grows at the edge of cultivated land
Oleander
The Mediterranean flowering shrub whose beauty conceals a lethal secret — Oleander is the evergreen shrub that lines every Italian highway and Greek island road, its pink and white blossoms among the most beautiful in the Mediterranean, while every part of the plant is fatally poisonous
Oghene
God, the supreme creator in the Urhobo spiritual tradition of southern Nigeria — Oghene is the Urhobo word for the supreme deity, used as a name prefix in compounds and increasingly as a standalone name among Nigerian Christians. It carries the theological weight of an indigenous African concept of monotheism that predated European missionary contact, the Niger Delta's cultural richness, and the pan-African movement to reclaim pre-colonial spiritual vocabulary

Common questions about Onyx

What does the name Onyx mean?

Onyx means "Black gemstone, claw — Onyx (Greek ónyx 'claw, fingernail') names a child after the deep black gemstone, used in jewelry and ritual since antiquity. A modern surging unisex name.." It is a unisex name of English origin, traditionally used in Christian families.

Is Onyx a boy or girl name?

Onyx is a unisex name, used for any gender.

What is the origin of the name Onyx?

Onyx is of English origin, used in Christian, Atheist traditions, commonly among American, British, Greek families.

What is the numerology of Onyx?

Onyx has a Pythagorean destiny number of 6 — nurturing and family devotion.

See how Onyx scores for your family

NameRoot is the only baby-name app that scores every name across 6 signals against your specific family context. Download free — Onyx is waiting.

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