All chains and charms are 16k gold plated and of the highest quality material. They will not deteriorate with wear, even when worn daily and in the shower. We've tested them ourselves!
Just to be safe, never leave a child under 6 years old unattended while wearing any jewelry product. Remove all jewelry before napping, riding in a car seat, bath-time, unattended playtime, or bedtime. Small parts may present a choking hazard.