14k gold over sterling silver whale tails dangle from our 14k gold over sterling silver hoops. Our whale tail earrings are mounted on our exclusive tent whale Natural History cards. Whale tail 3/8 inches, hoop diameter 1/2 inch. Educational information about whales on back of card. Semaki & Bird exclusive. Made in U.S.A. The earring hoops are delicate which may make them more difficult to put on. If you have trouble inserting earrings, you may want the whale tail dangle earrings with french wires.