These silver-white earrings are made of 925 sterling silver, hypoallergenic, nickel-free, and feature medical steel posts. The blue round earrings are crafted from high-quality sterling silver. These fashionable jewelry pieces for women feature small white and blue fire opal earrings with artificial gemstones, plated in white gold brass, suitable for women and teenagers. Note: The earring clasps are designed to be loose for easy wear and removal, avoiding pulling and pain. If they feel too loose, you can gently press the clasps. Opal is the birthstone for October and symbolizes happiness, hope, purity, and joy. Perfect for everyday wear, even while sleeping, saving you time on daily removal. The solid gold earrings come in an elegant jewelry box, suitable for all occasions. They make a wonderful Mother's Day gift for your wife and are also perfect for birthdays, anniversaries, graduations, Valentine's Day, and other occasions.