Baby and Children's Earrings: Surgical Steel Dolphins with Gold IP

Very cute, petite, baby and children's earrings in surgical steel with 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 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.  The dolphins measure 7mm x 6mm with push on backs.