When do tranquility and strength work together in harmony? Only with the Zen Large Travertine Rectangular Vessel Bathroom Sink in white travertine. This version of their popular Zen sink is polished on the interior and chiseled on the exterior. 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. The free-flowing lines of this sink will provide your bathroom with a Zen-like feeling you can usually only find at your favorite spa. They recommend that you also purchase a drain with your stone sink in the same finish as your faucet.