A modern spelling of Onyx, from Greek onux meaning claw or nail and the black gemstone name.
Onnyx is a modern spelling of Onyx, from Greek onux meaning claw or nail and the black gemstone name. The gemstone association is the most vivid part of the name in modern use, giving it a sleek, dark, polished image. The altered spelling makes it feel even more stylistically contemporary.
As a given name, Onnyx feels bold and fashion-forward. It has the hard shine of a gemstone name but also the softness of an extended, doubled spelling. That combination makes it feel distinctive and slightly futuristic.
The name suggests strength, mystery, and a strong visual identity. It is rare, but it leaves a clear impression because the sound and symbolism are both so concentrated.