Big shopping malls generally don't fake goods, let alone appraisal certificates. Even A goods are divided into high, middle and low grades. The higher the price, the greater the moisture (profit), which may double or even double. There used to be a saying that selling jade is not for three years, but for three years. Of course, this is a bit exaggerated, but it also shows the price of jade. Anyway, as long as you think it's worth it, it's worth it