These beautiful earrings are composed of 14k solid gold. The gold plating enhances its shininess to make it look more vibrant look to it. The cubic zirconia (CZ) is a delicate add on and further deliver its brilliant look. The screwback is a safety ball earring backing that screws on and locks thus preventing for any poking in the back of the earlobe and lessening chances of lost earrings. These are for the safety of everyone from adults, teens, toddlers, to babies. All of our children’s earrings comply with applicable Children's Product Safety Regulations by ASTM (American Society for Testing and Materials), they are approved by for CPC (Children's Product Certificate) to make guarantee the safety of your children. Your baby deserves to be safe and unharmed at the same time look cute with their brand new earring.