In the provided sources, there is no information that directly answers the question of how to determine the appropriate age for a child's ear piercing.

Missing Guidelines for Children's Ear Piercing

In the provided sources, there is no information that directly answers the question of how to determine the appropriate age for a child's ear piercing. None of the cited excerpts contains recommendations or criteria related to selecting an age for this procedure.

Supporting citation(s):
"Heronda on Earrings in Ears and Nose" (source: link txt)
"Earrings and Aaron" (source: link txt)

These quotes mention earrings, but they do not offer any information regarding the establishment of an age for ear piercing in children.