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Joke ornaments

Look at purity: the higher the purity, the whiter the silver, and the jewelry surface looks even, shiny and polished. If it contains lead, the jewelry will appear bluish gray; If it contains copper, the surface of jewelry will be rough and the color will not be moist. Look true or false: it looks white, shiny and delicate, and it is a high-quality silver jewelry; Most of the color difference and dullness are fake silver ornaments. (Be careful when inserting things online)