cheap wholesale jewelry and accessories Where can Beijing identify the gold ring? Authoritative

cheap wholesale jewelry and accessories I bought a beautiful gold ring on Taobao today and received it when I mail it, but I do n’t know if it is true or not, I did n’t dare to notify Alipay to pay. Where can I identify the gold ring in Beijing is true or not? The authority is authoritative, the measurement is accurate, and the appraisal fee is OK.