Jewelry identification skills: 1, put the diamond under ultraviolet light and have a look at the diamond under ultraviolet light. Real diamonds emit blue light under ultraviolet light, so they must be real. However, not all diamonds will glow under ultraviolet radiation. Therefore, the fact that diamonds don't shine doesn't necessarily mean they are fake, and further verification is needed by other means.
2. Look for signs printed with 925, 900 or 800 on silverware: silverware bought in regular places has some digital signs, which are almost universal all over the world. These symbols are 925, 900 or 800, representing the purity grade of silver.
3. Use powerful magnets to attract your gold and silver: In order to increase the weight of fake gold and silver, criminals may add a lot of iron or other magnetic metals to the products. Gold and silver are not magnetic. So you can try to test gold and silver with magnets. If it is magnetic, it is fake, or it is added with iron.