Round Lightweight Threaded Stud Earrings MountingsRound shape 4 prong basket stud earring settings are precisely crafted with metal mold for 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 of semi polished settings only, Threaded Earring backs and stone sold separately, Quality Mark: No, Primary stone shape: Round, Available stone size: 2. 5mm