Onyx, is a parallel banded form of the silicate mineral chalcedony. Onyx has the same mineral composition as agate but differs in that it has parallel bands instead of the curved bands of agate. Onyx countertops are desired due to them being translucent, which allows different backlighting to bring a new creative style to the usual surfaces. The biggest drawback would be the fact that onyx is prone to scratching and looking dull quicker than most other countertop materials.
