Made from one of Earth's most precious stones, Novatto's blue onyx vessel will add character and charm to your bath or powder room. These natural onyx vessels come from around the world to provide you with a one-of-a-kind masterpiece. Natural stone cannot be compared to everyday synthetic porcelain and ceramics. Honed and hand polished to perfection, this round 17-inch vessel is elegant and unique in tones of light blue and cream white. Because blue onyx is a product of Mother Nature, each sink will vary slightly in color and veining. They're designed for above-counter installation with standard U.S. plumbing connections. For best cleaning results, a soft cloth with mild soap and water or a non-abrasive stone cleaner is recommended. A stone sealant should be used to help protect the surface and allow for easier cleaning. Included with the sink is Novatto's umbrella drain (UPD-BN), constructed of solid brass for strength and durability. Finished in brushed nickel, the drain assembly has two rubber seals, a plastic spacer, and brass fastener. Novatto strives to provide superior products with exceptional qualities and unique innovations that professionals and homeowners trust.