Hello, loose diamonds are generally equipped with GIA certificates from the United States. With this certificate, you can rest assured of its authenticity. A diamond ring with a score of less than 30 points should be accompanied by a national inspection certificate, and a GIA certificate should be accompanied by more than 30 points. The diamonds in such a store must be real, and the store will not fool people with their reputation. Gold is cheap because of the activities of shops and the policy of attracting tourists with small profits but quick turnover. Old Temple, Chow Tai Fook, Laofengxiang and other mature gold jewelry stores, the expensive part is only the brand value. So you can rest assured. Please let me know if you have any questions.