These big crystal hoop earrings are Roberta Chiarella's biggest, yet. Of course, you'll notice that the larger the hoop the greater the sparkle of the white crystal detailing. These glam hoops have omega-snap post backs for pierced ears. Available in your choice of polished platinum plate or gold plate.\r\n\r\n. \r\n Diameter: 3.25 inch. \r\n Metal: Platinum plate or gold plate. \r\n Stone: Crystal. \r\n.