Low-grade diamonds, low-grade gems, some of which are worthless. Dozens of dollars. To several hundred yuan. For example, the diamond ring sold outside is 2000 yuan. Ring demand 1000 yuan. How much is that diamond worth? Shopping malls still need to save money, and waiters also need commissions, inlay fees and cutting fees. The original stone of that diamond is not as good as the master's labor.
I'm a jeweler. I'm not worried that the master will steal these jewels. Because no master would steal such a worthless diamond and jade. His own labor for polishing, cutting and inlaying is much more expensive than that.