Material: copper, opals. The earring size is 3.1*1.1cm/1.2*0.4inch; the earring clip diameter is 0.8cm/0.3inch. It is a wonderful option to purchase as a gift. It will be a charm and good accessory to wear elegantly and beautifully. Suitable for a variety of occasions: banquet, party, wedding, homecoming, anniversary, proposal, engagement, date, shopping, travel, etc.