Replacement Silicone Coated Genuine .925 Sterling Silver Butterfly Earring Back. One pair of earring backs. Material: 925 Sterling Silver and silicon. Silver weight: 1.1. Diameter: 6 mm. Brand new. Questions? Drop them in the comments. Responsibly sourced, made from conflict free materials and free of nickel, lead, and any other unsafe mineral. This is genuine 14k gold and .925 sterling silver. Brand new. Questions? Drop them in the comments. Bundle for a discount. Thank you for browsing my closet and happy poshing to you.