Crafted in 14k yellow gold and stamped 14k on the wire bar. Made in USA. We are an American owned and operated company. Outside diameter of hoop is 13mm = 1/2 inch, which is smaller than a Penny (Penny is 19mm big). Thickness of earrings are 2 millimeter wide. Sturdy click-top closure for an easy and comfortable all day wear. Shipped in an elegant gift box. #37,766 in Clothing, Shoes & Jewelry ( ) #295 in