Because of the current craftsmanship, some of them are polished, bright, and some deliberately make dark sub -colors. of course, gold is red and yellow.
Pay content for time limit to check for freenAnswer Hello, I am glad to answer questions for younThe purity is not the same. This is because the physical chemical properties of pure gold are very stable in the natural state, and 1 will not be splendid. However, because jewelry gold is not an absolute pure gold, they all contain a proportion of silver, copper and other metals with the height of K. These impurities metals will produce chemical reactions under the action of air and other bad media media. The surface of the jewelry constitutes a layer of gray -black film or mildew, which seriously affects the golden jewelry's golden colorful colors, making all the jewelry darker.nOxidation problem. Some places are exposed to sweat or chemical supplies. It will be blackn1 morenBleak
Because of the current craftsmanship, some of them are polished, bright, and some deliberately make dark sub -colors.
of course, gold is red and yellow.
Pay content for time limit to check for freenAnswer Hello, I am glad to answer questions for younThe purity is not the same. This is because the physical chemical properties of pure gold are very stable in the natural state, and 1 will not be splendid. However, because jewelry gold is not an absolute pure gold, they all contain a proportion of silver, copper and other metals with the height of K. These impurities metals will produce chemical reactions under the action of air and other bad media media. The surface of the jewelry constitutes a layer of gray -black film or mildew, which seriously affects the golden jewelry's golden colorful colors, making all the jewelry darker.nOxidation problem. Some places are exposed to sweat or chemical supplies. It will be blackn1 morenBleak