There is a diamond bird on the mainland, which is called Blue Nile in China. The diamonds of this parameter in his family are all over 1 1000. If you are in the G color of 3EX, there are more than 6000 domestic diamonds1global diamonds 1 1000 (domestic diamonds are in stock, so you can go to see the finished products, and global diamonds are futures, but you can't see the finished products, so how clear your hands are is a big problem).
As a friend of fgfgfg528 said, don't buy cutting VG, it's not fooling you. I bought it on bluenile, and the 56-point E color SI 1 clarity 3EX was cut (actually, I should have raised the clarity to G, but I asked the customer service to make sure it was clean with the naked eye). I spent 10900, because I didn't have any friends to take it for me, so I sent it directly to the mainland after the tax increase. The above is GIA certified, but my price is 1 1, so you don't know much about the price in January.
You can also search a jewelry forum, there are many trusted private merchants, and you can also give a lower price than bluenile to see the quality of diamonds.