The Planal line emphasizes contrast. Through a natural process called oxidation, silver turns black. Heat guilding is a process in which sterling silver is heated to a point that the fine silver comes to the surface causing it to look white. These pieces are first sandblasted, preparing the canvas, so to speak, and then either oxidized to matt black, or heat guilded to matt white. The edges are then high polished to create contrast. These pieces are the equivalent of a pin striped suit; sharp and stylish.