The Gemma Augustea
Raw onyx is anywhere from a golden-beige to smoky black. Polished onyx is usually shiny black and can be made into a wide variety of jewelry pieces. A banded variety of the mineral chalcedony, it's sibling is the agate stone and the only difference between them is which way their bands run. Sardonyx is the beautiful red variety of onyx, which was used by Roman warriors to represent Mars, the god of war, but you can find yellow, blue and green shades too.
While onyx is Latin, it ultimately comes from Greek word meaning "nail" or "claw." Historically it has been used since ancient times for ornamental carvings, cameos, bowls, and other works of art. It's also mentioned in the Bible.
Elsewhere, Onyx was used as the name of a planet in the novel Halo: Ghosts of Onyx, as a comic book character from the DC Universe, is the name of a pro-wrestler, and is also a strategy game.
Alanis Morissette's daughter born in 2016 is named Onyx Solace. She said she chose Onyx because the stone is commonly found in her home country of Canada, but it is also stong and does not break easily.
There were 38 girls in 2015 and 56 girls in 2016 given this name. There were also 118 boys in 2015 and 172 boys in 2016.