Rhodium Plated Sterling Silver Synthetic Blue Opal Dolphin Hook Dangle Earrings Truly beautiful combination of Blue Opal and Sterling Silver makes this earrings the perfect accessory. Rhodium Plated For Superior Finish And Anti-Tarnish Properties;Nickel-free;Prevent allergy. Earring size:25*15*2mm;Weight:2.96g;Fishhook backings,light,easy and comfortable to wear. Let's protect marine life together. Perfect gift for any occasions that will surely make a memorable impression.