Sleek, straight lines are rarely seen in handcrafted pots, for a very good reason: when clay is in a kiln, it’s impossible to keep the sides and corners square. Our superb Vietnamese artisans have devised a solution using a remarkable, all natural material. The contemporary Pietro Stone collection uses slabs of rock created from solidified magma from a 1926 volcanic eruption in Southern Vietnam, by fusing these rock slabs together, our craftsman create spectacular works of art impossible to duplicate in clay. This collection is frost proof.