Made from one of Earth's most precious stones, Novatto's rare white onyx vessels will add character and charm to your bath. Our white onyx sinks come from around the world, giving you a one-of-a-kind bath masterpiece. Natural stone cannot be compared to everyday synthetic porcelain and ceramics. Honed and hand polished to perfection, this round 17-inch vessel will be your bath's centerpiece. Onyx is translucent, letting light easily pass through it. If you want to make a statement, place lights in the counter underneath the sink to give it an ambient glow! Since onyx is from Mother Nature, each sink will vary slightly in color and veining. These sinks are designed for above-counter installation. They have a 1.75-inch drain opening for standard U.S. plumbing connections. Suggested Novatto strainer drains: STD-ORB (oil rubbed bronze), STD-BN (brushed nickel), and STD-CH (chrome). For best cleaning results, a soft cloth with mild soap and water or a non-abrasive glass cleaner is recommended. A stone sealant should be used to help protect the surface and allow for easier cleaning. Just add water and enjoy Novatto's Limited Lifetime Warranty. Supreme packaging and boxing ensure damage-free delivery. Novatto strives to provide a superior product with exceptional qualities and unique innovations that professionals and homeowners trust. Novatto's customer service is always here to answer any additional technical product questions or help you choose a matching faucet at 844.404.4242 or productsupport@novattoinc.com.