Granite sphere or “kugel” fountains are a familiar sight in town squares and science museums, and smaller ones – often with a marble sphere – decorate many private homes and gardens. These fountains consist of a perfectly polished ball floating in a socket that fits precisely around it. The fluid that wells up around the rim of the socket is pumped into the fountain via a hole at the base. In spite of its considerable weight, the sphere is easily brought into a spinning motion, which is an attractive sight especially when the surface of the sphere is engraved with the Earth’s map, a soccer ball, the night sky, or something of the kind. The fluid layer between the socket and sphere is very thin (thinner than a credit card which is important for any kugel on display in a public place, since it means there is no risk of children’s fingers being caught under the spinning sphere.If you water to buy granite balls or granite spheres in your garden email granitesphere@gmail.com