Our flash plating gold is between 0.03-0.05 micron and plating thickness as per client's requirment, it can up to 3micron.Additionally, we always apply E-coating or Electrophoretic coating (for items less than 2 mirons) which is a clear coat that we put over our silver, gold and rose-gold plated pieces to extend the lifetime to its plating. Please note that e-coat will not change the outlook of the jewelry. During wear and tear, the e-coat will be the first to wear off. If that happens, please use a soft silver-polishing cloth to rub it against the affected area. They will make them bright and shiny again.