Nativestone® Olivos Round Bar & Prep Sink. Olivos is one stylish and versatile concrete sink, adding panache to any bar or prep area, indoors or out. Its near-vertical walls create a bucket-style basin with a conveniently ample base. And talk about versatile! Install as a drop-in sink to show off the smooth concrete rim, or install as an undermount sink for a look that's more discreet, but just as elegant. ** Due to their handcrafted nature, no two products will be exactly the same and may vary in finish, texture and other details. **