The P558 Shanxi Black Vessel Sink Is Made From Natural Granite. The Sink Is Carved From A Large Block Of Granite And Hand-Polished For A Smooth, Easy To Clean Finish. It Is A Uniquely Shaped Black Granite Vessel With A Glossy Shine With Specks Of White Throughout. Since Granite Is A Natural Stone, The Details Will Vary In Color And Pattern From Sink To Sink. A Matching Stone Waterfall Faucet Is Available To Correspond With This Sink. The Overall Dimensions For The P558 Are 18 1/2' X 16' X 4' And A 21' Minimum Cabinet Size Is Required. As Always, Our Stone Sinks Are Covered Under A Limited Lifetime Warranty For As Long As You Own The Sink.