These gold Huggie hoops are like the little black dress of hoops~ they're never the wrong choice to anchor your ear party. Perfect for first or any earring hole. 18k gold over 925 Sterling Silver. 9mm in diameter. 18k gold plating is a wonderful option to get beautiful gold pieces at an affordable price. I only use top rated jewelry manufacturers that have been in business for years and have the repeat customers to prove it. Gold Karat plating can last for years when properly plated.