Onyx is a form of chalcedony, part of the quartz group. Like the other stones in the chalcedony family, onyx has a smooth, waxy luster. Onyx can be found in a wide range of colors, often layered. Onyx marble is used most often as a fireplace surround; bar top, or as a small island as it transmits light. It is also used as cabochons and for building material. Careful consideration is required when using onyx marble at your residential area. Think of your own lifestyle and conditions before purchase onyx as a countertop surface or a bar top. Other uses further include wall cladding, light duty home floors, sinks base, and tables. Onyx could also used for novelty items such as vases, urns, wine goblets, lamps and bowls. It really works wonderful where you could accent the stone and use under lighting or backlighting to draw attention of its transparent qualities. Onyx marble could be purchased in tile shape or in large slabs for a versatile look and feel.