These stunning silver-white stud earrings are crafted from solid 925 sterling silver, making them hypoallergenic and nickel-free. The surgical steel posts ensure excellent quality and comfort. The blue circle opal earrings feature genuine sterling silver. Fashionable jewelry for girls and women, these white-blue fire opal lab-created gemstone small stud earrings are white gold-plated copper, perfect for women and teenage girls. Note: The clasps are designed to be slightly looser for easier wear and removal, preventing painful pulling. If you find them too loose, you can gently press the clasps tighter. Opal is the birthstone for October, symbolizing good luck, hope, purity, and joy. Perfect for daily wear, these earrings can be worn while sleeping without discomfort, saving you time from taking them on and off every day. These genuine gold stud earrings come in an elegant jewelry box, making them perfect for any occasion. They are wonderful Mother's Day gifts for wives, ideal birthday gifts, anniversary gifts, graduation gifts, Valentine's Day gifts, and more.