Basically, every department store uses this trick to cheat customers. Well, it can't be called cheating. Those who want to take the bait anyway. People who go to smoke are basically the first prize and the second prize. Anyway, they have to spend a lot of money to buy XXX jade, or jewelry like XXX gold inlaid jade, or XXX jade is now "winning" like a 10% discount. This trick has been around since childhood, for more than ten years, and countless people have been fooled.
Emerald doesn't have the same standard as diamond. You can't even complain to the industrial and commercial bureau about that. Because what people sell you is really jade, just tailings.