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The decrease in luster of gold and platinum necklaces is usually due to surface stains or oxidation, or long-term wear leading to increased surface scratches, which affects the original luster of the metal. Here are some methods to restore gloss

The main reasons for silver necklaces turning black are oxidation reactions and vulcanization. After the oxygen, sulfur, and humidity in the air come into contact with the silver surface, a black layer of silver sulfide (Ag2S) is formed, which is commonly seen as the phenomenon of "silver jewelry turning black". In addition, the sweat secreted by the human skin also contains certain sulfur components, which can cause silver jewelry to oxidize and change color faster when worn for a long time.

Matching different necklace styles in different occasions can make your overall image more appropriate, fashionable, and in line with etiquette. Here are some suggestions