Object Set of 2 by Currey and Company from the Russo collection in Natural finishThe Russo Travertine Object Set is made of titanium travertine, the surfaces of the sculptural pieces swirling with a more dynamic pattern than some travertine stones do. These brown sculptures were designed so they can also stand in for bookends. The pitting and veining on these objects will vary from piece to piece, given they are made of natural stone.