6 mm (0.25 inch) Custom Designer "Luxury Heart" .925 Italian Sterling Silver with CZ Small Post Stud Earrings Fashion for Unisex, Women, Teens, Girls - Nickel Free (Pierced Ears) METAL: .925 STERLING SILVER WITH CZ STYLE: "Luxury Heart" Stud Earring DIAMETER: 6 mm (0.25 inch) STEM POST: PUSH BACK with Friction-Back A MUST HAVE FOR ANY EARRING COLLECTON!