I really can't see it that way. Rub another piece of jade against each other to see if it smells. Of course, don't use too much energy. If it smells, it's jade powder pressed by machine. If there is no smell, it is at least polished by a whole stone, and then look at the water head. If it is true, 220 businesses will definitely make money, but not much. There is also to see where you bought it and read the comments online. If it's a street stall in reality, then you know. If it is a regular store, there should be no problem.