Opal Glitter Center and Crystal Paved Turtle. 316L Surgical Steel Belly Button Navel Ring. Turtle belly rings are a favorite for many! This one is adorable and features a beautiful sparkling synthetic opal full of glitter! Surrounded by a layer of clear crystals. 14GA. 3/8" barbell. 5mm ball top. Hit the beach in this cute belly ring! Turtle is 3/4" wide and 1" long.