Dear, hello DX is the Chinese phonetic abbreviation of Daxiong, and D in D0.043 is the English abbreviation of diamond, which proves that it is a diamond earring and PT950 is platinum. According to your gold weight and diamond revaluation, the average shopping mall will earn about half, so whether you buy it from Hong Kong or where, the price is similar. It will be very expensive to compare on Taobao ~ but since you bought it, you can wear it happily, and the certificate is no problem. There is a telephone number or website on the certificate for parents to inquire. It's genuine, but diamonds are not as valuable as gold, hehe. . . Nomont diamond replied