1. Observe the surface of the gold wares-if there are any wear, scratches, rust or other marks on the gold wares, it may be because the gold wares have been used and become second-hand gold wares.
2. Check the appraisal certificate-when you go to the jewelry store to buy gold, you should ask the salesperson to provide the official appraisal certificate of the gold ware. The appraisal certificate should include quality, net weight and obvious signs, such as printed or stamped gold. If in doubt, it can be re-examined by a third-party organization.
3, weight detection-each piece of gold must have a standard weight. Modern scientific and technological means, such as electronic scales and other tools, can be checked when buying gold wares to determine whether their net weight meets the standard.
4. Ask the seller-if you have any questions, you can ask the seller directly to find out whether this gold is second-hand and its history. If the seller can't provide clear information, then think twice about buying gold. It should be noted that even if gold has been used, it does not necessarily mean that it is no longer valuable. Gold is a reusable resource, and the quality and value of many second-hand gold wares can still be guaranteed. If you buy high-quality gold, its value will be directly reflected in your return on investment.