Is Chifeng City Bai Tai Jewelry Recycling Diamond Ring? Or can the diamond ring buy gold? What is the purchase policy

Diamond ring, jewelry, jade, etc. are luxury goods with large pricing moisture. Different from gold, gold and silver can have a standard content of pricing. The price of 300 yuan, sold for 330 yuan, is 10%of the profit.
The diamond ring is a huge profit, that is, the purchase price of the merchant is 500 yuan, which can sell for 5,000 yuan, that is, ten times or even tens of times hundred times the profit meter. Then you say that you bought it for 5,000 yuan, you have to sell it back to him. You are less than 1,000 yuan, but the merchant is expensive!
The old material is worthless. Therefore, diamond ring can only be used as consumer goods and cannot be used as an investment. If you want to invest, you can buy gold.