This Simple and eye-catching Hoop Earring with Double Chain is very comfy, perfect for everyday wear and can be worn alone or combined with other earrings and cuffs. Your choice of materials is: Sterling Silver, Rose Gold Filled or Gold Filled. Please choose at check out. Measurements: Helix Hoop inner diameter 7 mm. Wire Thickness 20 Gauge. Materials: 14K Rose/Gold Filled or .925 Sterling Silver hoop and chain. Nickel and Lead Free (Hypoallergenic) perfect for sensitive skin.