An NCP protective coating for precious and semi-precious metals like gold, silver, platinum, stainless, brass and copper for rings, necklaces, bracelets or any jewelry type. This coating permanently prevents tarnishing and dullness on high polished mirror finish precious and semi-precious metal. GOLD GUARD will also help to keep costume and plated jewelry from abrasion removing the outer plating layer. GOLD GUARD creates a food grade safe invisible hypoallergenic protective barrier for those who are allergic or get skin rashes or irritation do to prolonged skin contact with metal jewelry. Easy to apply after jewelry is either professionally polished or you can easily polish it yourself with our non-toxic, non-abrasive NIX FIXX