The G30 square black vessel sink is manufactured using fully tempered glass. This allows for higher temperatures to come in contact with your sink without any damage. Glass is more sanitary than other materials because it is non-porous, will not absorb stains or odors and is easy to clean. This squared vessel sink is made from black-colored glass and adds a unique twist for any bathroom sink. A matching glass waterfall faucet is available to correspond with this sink. The overall dimensions for the G30 are 15 3/4" x 15 3/4" x 4 1/4" and an 18" minimum cabinet size is required. As always, our glass sinks are covered under a limited lifetime warranty for as long as you own the sink.