A bezel is a wider and usually thicker section of the hoop of a ring, which may contain a gem or a flat surface. Rings are normally worn to display bezels on the upper or outer side of the finger. In gem-cutting the term bezel is used for those sloping facets of a cut stone that surround the flat table face, which is the large, horizontal facet on the top.
Signet ring with engraved bezel
Ring with an engraved gem in a bezel setting
Diamond held in its setting with a bezel
A ring is a round band, usually made of metal, worn as ornamental jewelry. The term "ring" by itself denotes jewellery worn on the finger; when worn as an ornament elsewhere, the body part is specified within the term, e.g., earrings, neck rings, arm rings, and toe rings. Rings 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, jade, gemstone or plastic. They may be set with gemstones or with other types of stone or glass.
Ruby ring
Henig II rings from the Snettisham Jeweller's Hoard
Episcopal rings for bishops and archbishops. (Musée national du Moyen Âge, hôtel de Cluny, Paris)
Image: Regards acrostic ring