For older girls, teens and Mums, these chunky surgical steel, gold IP huggies feature a ball dangle.  Inner diameter is 10mm, outer diameter is 15mm. Ball measures 5mm.  What is IP gold?  Unlike gold plating, "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." Also available in surgical steel.