For children from perhaps age 5 or 6, these size 5 rings are encircled with sparkling clear cz and are also available in size 7, 6, 4 and 3. 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.