The production principleof Real Platinum Plated and Real Rose Gold Plated jewelry is the same as 18K gold plated, it is also made by electrochemical plating or chemicals to deposite a very thin layer of 18k gold over the base metal. The only difference is the color of 18K gold, the factory will combine 25% of precious metals according to the needs of product, and determine the color of 18k gold according to the different content of precious metals in the 25%. Rose Gold is made up 75% Gold+25% Copper+Silver+Zinc, Platinum(White Gold) is made up 75% Gold+25% Silver+Nickel+Zinc(Nickel not exceed 0.3%).