These beautiful sparkly, faux geode studs are available in a variety of lead and nickel free settings. If you have metal allergies, there are several hypoallergenic post options to choose from: silver stainless steel, gold stainless steel, surgical steel, sterling silver, or acrylic (non-metal) posts. Specifications: - Material: resin and metal (available in a variety of lead and nickel free metal settings) - Size: 8mm Druzy Cabochons - Strong and durable - Hypoallergenic - Nickel free Visit the 8mm Stud Collection to see more earrings this size. For earrings in a different size, visit the 6mm Stud Collection, 10mm Stud Collection, or 12mm Stud Collection. For sizing, check out the Sizing Chart for Stud Earrings.