Adorn your cartilage piercings with our new collection of opal labret studs available in gold and silver. The Opal Labret stud features a claw set opal full of iridescent shimmer to add a unique sparkle to your stack. Size 4 mm Stud. 1.2mm Wide, 8mm Long Materials 18 Carat Gold Plated 925 Sterling Silver Fastening Type Internally threaded labret. Front screwing.