Even more beautiful in person, this natural cobblestone vessel is sure to add a touch of charm to your bath. This natural cobblestone vessel comes 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 this sink is from Mother Nature, each sink will vary slightly in color, shape, and size. This sink is constructed for the above-counter installation. They have a 1.75" drain opening for standard U.S. plumbing connections. 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. Since these sinks are from Mother Nature, each sink will vary slightly in color, shape, and size. Therefore, we will send a picture of the one we are sending before shipping for approval so make sure you provide an email or good phone number.