How about Hong Kong Xiangrui Jewelry?
I bought it, and the quality is good. There are many kinds of precious stones. You can't see so many varieties in other stores. Many styles, very beautiful. Moreover, there is only one of each type. I have been there once before, and I like rings. I wanted to see more at that time, but I didn't buy it. A few days later, someone else bought it and had to choose another one.