A ring is a round band, usually of metal, worn as ornamental
jewellery. The term "ring" by itself always denotes the finger
ring, but when worn as an ornament elsewhere, the body part is
always specified, e.g. earrings, neck rings, arm rings, and toe
rings. Rings always fit snugly around or in the part of the body
they ornament, so bands worn loosely, like a bracelet, are not
rings. Rings may be made of almost any hard material: wood, bone,
stone, metal, glass, gemstone or plastic. They may be set with
gemstones (diamond, ruby, sapphire or emerald) or with other types
of stone or glass.
