MR Direct offers a variety of stone vessel sinks cut from blocks of stone and hand polished. Choices include marble, onyx, sandstone and granite. Each of the stone sinks is a one of a kind, because they are excavated from the earth, not manufactured in a factory. The sinks are heavy and stable. This natural weight and density also means that noise is minimal. Also, all stone sinks can be polished to at least a very smooth matte or satin finish, and many can be buffed to an extremely high gloss. The marble sinks are fashioned in three functional shapes, each in a distinct shade of black, white and yellow with varying tones and vein patterns. Onyx sinks are somewhat translucent with heavy veining and come in a choice of white or honey colors. The sandstone model has a matte finish inside and out. The strata of compressed layers of sand create a beautiful, almost wood-like display. And granite sinks are the most popular vessels, being the most resistant to chipping, staining and heat.