Hello! Generally, the detection is within 100. If it is true or false, it only needs about 50 yuan. It depends on the size of the diamond. In addition, if you want to open a certificate, the price generally ranges from 300 to several thousand yuan. You can check the phone number of the quality inspection center by Baidu, and then it will be more clear to call and ask. There must be a gap in the cost of testing in different places. I hope my answer can help you!