If a child has their ears pierced, it really comes down to what type of options might work best for them on a daily basis. Some people might decide to put cheaper earrings in, while others will look for kids diamond earrings to shop for.
Wearing a diamond earring of any kind at any age is going to be something that catches the attention of people who are passing by. Putting it on a kid is definitely going to be flashy, but some people are able to afford it and really show off.
It is important to know that each child needs to be aware of the fact that they are wearing something that is going to be relatively expensive. They should not be trying to mess around with it, and they definitely should not be taking it in and out throughout the day.