Children's, Teens' and Mothers' Earrings: Surgical Steel, Gold and Rose Gold IP Earrings Set 1

A pair each for the girls in the family.  1 x 6 prong, 4mm clear cz studs for the little ones, with gold IP.  1 x Gold IP hearts with central clear cz for girls over 5 or 6. and 2 x pairs of open hearts with clear cz, for teens or for Mum, one in gold IP, one in rose gold IP.  What is gold IP?   "To begin with, a layer of titanium nitride is added to the base surface of stainless steel. Additionally a final plating metal (gold) is added to the surface; the thickness of this layer is no more than 0.3 urn. ... Given its durability and chemical stability, ion plating is rightly called “permanent” coating."