Used attributively to describe something made of onyx or having the color of onyx (deep black); relative adjective, no comparison degrees normally used.

Synonyms

striped

banded

dark

Definitions

onyxnoun

A type of chalcedony, a mineral of the quartz family, characterized by its parallel bands of color, often used as a gemstone.

The jeweler showed me a beautiful ring set with a polished onyx.

A black or dark-colored variety of this mineral, often used in jewelry and decorative items.

She wore a necklace with a large onyx pendant that gleamed in the light.

onyxadjective

Made of onyx or resembling the deep-black color of onyx.

The bathroom was finished with sleek onyx tiles.