Aqua Jeweled 3mm Star Jeweled Labret Stud 18 or 16 gauge can be worn as a Lip Ring, Cartilage Earring, Tragus Earring, Monroe Jewelry, Helix Earring, Ear Lobe Earring. The labret stud has a jeweled star, 1/8 inch (3mm) diameter, prong set stone and is designed to lie flat. The 316L Surgical Stainless Steel labret stud bottom is available in 18 gauge in lengths of 1/4 inch (6mm), 5/16 inch (8mm) or 3/8 inch (10mm) or 16 gauge in lengths of 1/4 inch (6mm), 5/16 inch (8mm), 3/8 inch (10mm) or 1/2 inch (12mm) post lengths. Labret Post length is measured in a straight line between the flat back and the top ball, not including back or top ball. Flat disk on bottom of labret stud is 3/16 inch (5mm) diameter. Labret Stud is internally threaded, which means the threads stick out of the ball and screw into the hollow labret post.This item is suitable for star lip rings, 18g lip rings, 16g earrings, tragus studs, madonna piercings, Monroe piercings, tragus earrings, cartilage earrings, ear cartilage piercings, helix piercings, forward helix piercings, ear lobe piercings, conch piercings, tragus piercings, lip piercings, or almost any 18 or 16 gauge piercing.