Visiting various jewelry cities and buying them in shopping malls is simply a rip-off. There are several large jewelry shopping malls in Beijing. Don't think that you will be fooled by buying in private places. Now each jewelry city has a testing center, which allows merchants to issue certificates. Now private shops also attach great importance to credit. I am a gem-grade tourmaline monopoly, with good color, large particles and high purity. /kloc-there are many more than 0/0 carat. I got married in Xidan 109.