Fake, personally experienced, where I bought a string, claiming that the seed material is good in appearance, but the result is blue sea material, and the appearance of blue sea material is still very poor, full of cracks and pits. Even if the certificate is fake, I want to laugh. The picture is a bracelet, but the underground introduction turned out to be a baby safety lock, and I don't care if it's fake or not. Wechat refuses to admit that it is seed material, which is really rubbish. Be careful. Look at the boss before you buy jade. Good jade can be good. Jade products are like character. The stone palace is rubbish. Jade friends should be careful.