Furniture Design Courbe Vase by ChungSheng Chen The beautiful curvy shape of Courbe vase, is made of two tubular metal pipes by innovative technique that bend and clamp two pieces of metal pipe, which is a pipe within another pipe at the same time without any welding process, producing a unique flower vase and also serve as a diffuser bottle. The two tone color coating of the pipes, black and gold, enhancing a sense of luxury.