When the gold ornaments are not bright enough, you can polish them yourself. The method is: squeeze a little toothpaste on a soft cloth (such as a towel), and then wipe it back and forth on the surface of the jewelry until it is bright (sometimes you need to squeeze toothpaste several times). After shining, wash off the residual toothpaste with clear water, and it will be as bright as new. Of course, this method is very practical for gold rings, bracelets and other jewelry, but it is not suitable for thin gold necklaces.

Another nondestructive cleaning method is to put it into clear water of ultrasonic cleaning machine, start cleaning for about 1-2 minutes, and then take it out to dry. This ultrasonic cleaning opportunity is available in large jewelry processing companies or glasses companies (cleaning glasses for customers).