wholesale pearl jewelry sets What metal mixed in gold, or the color of real gold after burning?

jewelry price tags wholesale The closest is "最".
The ratio should be controlled in a certain range.
One year before, the 315 party broke out of the gold of a well -known brand in China and was artificially added. After adding such substances, the normal burning of the musket was not aware of the change, only when the temperature was the temperature You can see the clue when you are close to the gold melting point, or you can find out the problem through the jewelry X -ray spectrometer.