5 aurora borealis ab crystal stud cartilage earring, tragus or helix piercing. 316L surgical steel barbell piercing is 16 gauge with a 1/4" long post with a screw on ball backing. The crystals are ab, or aurora borealis and change color in the lighting. In between the crystals is wire wrapped, shown with copper wire. Please choose your color from the drop down box. All orders arrive in a gift box.