Synthetic Opal Flat Back Stud

synthetic opal flat back stud I believe the post is extra long to accommodate swelling I'm not sure the metal, it was an earring that I bought from a reputable piercer after I had my tragus pierced but I'm switching out my jewelry to emeralds so I don't need this one will be cleaned before sending of course 💕 tagging catbird only for exposure of flat back studs and opals