Can white gold be converted to yellow gold?

NO, once it is yellow...you CANNOT change it to white. * Yellow gold is made by mixing pure gold with alloys such as copper and zinc. * Rose or pink gold is made using a mix of pure gold with alloy metals including copper. The copper provides the rose-reddish color. * White gold is an alloy of gold and some white metals such as nickel and palladium. The only way you can change the color of your ring is to have it plated. This method is not permanent as the coating will wear off through normal wear and tear. However, almost all white gold rings today are rhodium plated and there is no reason you cannot rhodium plate a yellow gold ring. The difference is that the contrast will be much greater as the plating starts to wear, so more frequent replating will be necessary. In the case of jewelry that receives little wear, like a pin or a broach, rhodium plating may last indefinitely. Sure, yellow gold could be turn in white color and we have yellow gold rings and white gold rings. It is common for jeweler to make a 18k white gold ring by yellow gold. He will add 25% other metals, like nickle which would make the yellow color turn into white. That comes a 18k white gold ring.