The P658 White Onyx Vessel Sink Is Made From Natural Onyx. The Sink Is Carved From A Large Block Of Onyx, A Type Of Marble, And Hand-Polished For A Smooth, Easy To Clean Finish. This Sink Has An All-Over Pale Yellow Color With Light Tan Veins Running Through It And Clusters Of Reddish-Brown Scattered Throughout. Since Onyx 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 P658 Are 16' X 16' X 5' And An 18' 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.