Body Candy Solid 14k White Gold 2mm Genuine Onyx Bioplast Push in Labret Monroe 16 Gauge 5/16" Gauge 16 gauge; 1.2 millimeters Length 5/16 inch; 8 millimeters Labret with 2 millimeter natural onyx stone in bezel setting Solid 14k white gold push in setting with bioplast post Quality labret stud can be used for monroe, tragus, and other piercings