The Eden Bath Rough Exterior, Polished Interior Round Above Counter Vessel Sink is made from natural Black Granite stone. This beautiful stone granite sink is designed like yin and yang featuring a natural chiseled rough exterior with a smooth as silk polished interior. These two stone surfaces give the stone granite sink a level of depth that your typical bathroom sink just cannot replicate. The rough exterior of this stone sink provides a rustic rough and natural look while the polished interior provides a functional and beautiful stone sink surface. We recommend that you also purchase a drain with your stone sink in the same finish of your faucet.