First of all, you need to take your old jewelry to the jewelry store you bought at that time to exchange it for new jewelry. In this process, the cost includes processing fee and loss fee. Together, the cost for customers to trade in the old ones is about 2 1 ~ 30 yuan per gram. Some gold shops even require customers to stipulate new losses when exchanging old ones for new ones, which must be 65,438+00% ~ 30% heavier than the original losses.