Sterling Silver Endless Hoop Earring, 12mm (One Earring) SINGLE Sterling Silver Hoop Earring is 12mm or .47 Inches in Diameter Sterling Silver Earrings are Hypoallergenic Earring is 6mm Smaller than a Dime in Diameter Available in 12mm, 16mm, 20mm, 24mm, and 30mm for a Matching Series Made in America