Sapphire & Diamond Earrings. Perfect for the September-born birthday girl, these sapphire and diamond fashion earrings add a bright pop of color to her ear. Crafted in bright 10K white gold, these stylish earrings showcases a oval-shaped bright blue sapphire in a four-prong setting. Shimmering diamond accents flank the top side of each, adding extra sparkle and completing this exquisite design. Polished to a brilliant shine, these earrings are certain to become one of her go-to favorites.