Emerald 4-Prong Lightweight Threaded Stud Earring MountingsPair emerald 4 prong lightweight stud earring mountings feature with threaded post and are precisely crafted with metal mold for a finer finish. These high quality semi polished settings are intended for faceted gemstones, require notches to be cut according to your gemstone with the proper tools and skills to set and finish. One pair semi polished settings, stone sold separately, 0. 032"x0. 375" threaded post, threaded earring backs sold separately,