Onyx (noun)

1. A type of chalcedony, typically characterized by parallel bands of black and white or other colors and used in jewelry and other decorative items.
2. A black or dark-colored stone, used in jewelry and other decorative items.

Origin:

The word "onyx" is derived from the greek word "onux" meaning "fingernail", it is a type of chalcedony, typically characterized by parallel bands of black and white or other colors and used in jewelry and other decorative items.

Examples:

1. The onyx ring was a gift from her grandmother.
2. The onyx necklace was a beautiful addition to her jewelry collection.
3. The onyx earrings were a perfect match for her dress.
4. The onyx gemstone was used to make a beautiful pendant.
5. The onyx marble was used to make the fireplace surround.