To speak of gold-plated the gold layer may not have less than 10 KT and must be at least one-half micrometer thick, but the thickness of the end layer depends entirely on the manufacturer.
To know more about gold and its use in jewelry, visit http://www.dunebeads.com/en/artistic-technique-gold-plating
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French hook ear wires or Shepherd hooks, 9x19 mm – with bead and coil – brass, platinum color – one unit contains 1 pair
French hook ear wire with coil, Shepherd hooks, 10x20 mm – sterling silver, lightweight – one unit contains 1 pair
French hook ear wire, Shepherd hooks, 14x20 mm – flattened – coil & ball, loop – sterling silver – one unit has 1 pair