Blue Marble Onyx is natural stone. Imagine a stone that you would see in pretty shades of blue plastered across buildings. This stone is that and much more. Not only is it a beauty, but it is also a high performance stone as it may be used as a countertop or as stone flooring or cladding for walls. You may rest assured that the quality and performance of YUSHI STONE’s Blue Marble Onyx will meet your expectation of the finest quality.