Squeeze some toothpaste that is usually used on old toothbrushes. You don't need to get wet. Brush the blackened part back and forth, and you will see the silver necklace after a while. You can also use silver cloth, you can use silver cloth sent when you buy silver jewelry, or you can buy silver cloth from a jewelry store and gently wipe the oxidized silver jewelry. Sour vinegar uses cooking vinegar to scrub silver ornaments, because vinegar contains acetic acid, which will dilute the discolored part.

Silver ornaments:

Silver ornaments refer to all kinds of decorations made of silver. Silver is one of the precious metals, which is silvery white. Silver ornaments are processed by various processing techniques, and there are many kinds of silver ornaments, which are basically divided into five categories: earrings, necklaces, hand ornaments, foot ornaments and costumes. After the founding of New China, especially since the reform and opening up, traditional silver ornaments have entered thousands of households and are still loved by many people. There is also a film of the same name "Silver Jewelry".