Onyx is a parallel banded silicate mineral. Quite similar to agate, with the bands being the defining factor. Agate has curved bands. Onyx’s bands are parallel and run straight. Onyx comes in a multitude of colorations, and can have impurities and other things that affect coloration. When most think of onyx, they think of black onyx. Black onyx is actually one of the rarest varieties known.
~Items photographed are representative of our gallery and may have been sold. Please call us to see our current inventory!~