Kids/Baby's-Teens/Young Adults Sterling Silver Cubic Zirconia Solitaire Stud Earrings. These beautiful sterling silver stud earrings make the ultimate birthday gift, featuring round brilliant cut cubic zirconia inspired by everyone with each stone secured in four-prong basket settings. These round earrings are secured with butterfly backs, making them easy to place on and remove. Celebrate your birthday year-round with these vibrant and glittering stud earrings.