Semi-mount  prong-set ring settings for your favorite gemstones. Prenotched prongs make it easy to mount stones. Most styles fit faceted gemstones, but there are also several styles of ring settings available for cabochons. Ring settings are only available in the full sizes listed, however the ring shanks are thick enough to allow for resizing up or down at least a full size. (Your local professional jeweler can perform this service for you usually at very low cost.)