These unique tumblers are made of serpentinite rock and clay, and are handmade by artisans. Dry serpentinite is hammered into powder and mixed together with the clay in a 70/30 ratio. After being fired in a kiln, the products are covered with leaves. The smoke from the leaves against the hot Serpentinite creates the unique black finish, and the final product is an authentic, organic piece of stoneware to be used for your enjoyment.
Great for everyday use in the kitchen, and alternatively make great vessels.