Onyx is a banded variety of chalcedony. The colors of its bands range from white to almost every color (save some shades, such as purple or blue). Commonly, specimens of onyx contain bands of black and/or white.

Onyx comes through Latin (of the same spelling), from the Greek ὄνυξ, meaning "claw" or "fingernail". With its fleshtone color, onyx can be said to resemble a fingernail. The English word "nail" is cognate with the Greek word.

Onyx is formed of bands of chalcedony in alternating colors. It is cryptocrystalline, consisting of fine intergrowths of the silica minerals quartz and moganite. Its bands are parallel to one another, as opposed to the more chaotic banding that often occurs in agates.

Sardonyx is a variant in which the colored bands are sard (shades of red) rather than black. Black onyx is perhaps the most famous variety, but is not as common as onyx with colored bands. Artificial treatments have been used since ancient times to produce both the black color in "black onyx" and the reds and yellows in sardonyx. Most "black onyx" on the market is artificially colored.

Sean Price (born March 17, 1972) is an American rapper and member of the hip hop supergroups Boot Camp Clik and Random Axe. He came to fame as one-half of the duo Heltah Skeltah, performing under the name Ruckus, or in short Ruck, along with partner Rock. He also is featured in the video game NBA 2K11 as a playable character in street mode. Price lives in Brownsville, Brooklyn.

In 2011, Sean Price was a judge on the Ultimate MC TV show alongside with Royce da 5'9", Organik, Planet Asia, and Pharoahe Monch.

Fredro Scruggs (born April 18, 1970) better known by his stage name Fredro Starr, is an American rapper and actor from South Jamaica, Queens, New York best known as a member of hardcore hip hop group Onyx.

Dro Starr released six albums with Onyx, and is the cousin of fellow group member Sticky Fingaz. He also contributed to the Sunset Park, Light It Up, and Save the Last Dance movie soundtracks.

Onyx split with Def Jam Recordings after their 1998 release Shut 'Em Down, and temporarily broke up, during which Starr released his first solo album, Firestarr, in 2001. Onyx reunited the next year and released Bacdafucup Part II, and Starr's next album, Don't Get Mad Get Money, arrived in 2003. He formed a new group called Yung Onyx in 2006. As of 2011, he and Layzie Bone of Bone Thugs-n-Harmony are planning to release a joint EP entitled FireSquad, which is set to be released late 2011/ early 2012.

Starr made his acting debut in Forest Whitaker's 1993 award-winning HBO drama Strapped, for which he earned a Cable ACE Best Supporting Actor nomination, in addition to several Onyx songs appearing on the soundtrack. Other film credits include Clockers, Sunset Park, Ride, Light It Up, and Save The Last Dance.