what can I say? It depends. Just understand. If you don't know the truth, buy less and read more. Like you said, it's a piece of Korean material at most. Even Qinghai materials and Russian materials are far higher than this price. With the certificate, like the first three materials, Hetian jade certificate can be issued by the authoritative department. If you have any questions, please leave me a message and look at the photos in my space. What are Hetian jade, seed material and Russian material?