Even more beautiful in person, Novatto's natural cobblestone vessels are sure to add a touch of charm to your bath. These natural cobblestone vessels 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, each irregular vessel is beautifully unique. Since these sinks are from Mother Nature, each sink will vary slightly in color, shape and size. These sinks are constructed for above-counter installation. These sinks weigh around 70-85 pounds. They have a 1.75-inch drain opening for standard U.S. plumbing connections. Suggested Novatto umbrella drains: UPD-MB (matte black), UPD-ORB (oil rubbed bronze), UPD-BN (brushed nickel), and UPD-CH (chrome). Depending where it bought from we will send pictures of the one we intend to send for approval. For best cleaning results, a soft cloth with mild soap and water or a non-abrasive stone cleaner is recommended. A stone sealant like Glacier Ice should be used to help protect the surface and allow for easier cleaning. Novatto strives to provide a superior product with exceptional qualities and unique innovations professionals and homeowners trust.