If it is really jade, of course, the buyer knows the goods, and it is normal that there are hundreds of thousands of people who meet certain conditions (because there is no place to go for hot money in recent years). I wonder if you have seen this stone. If it is mountain material, it is unlikely to completely contact jade. There will be a layer of skin outside, just like ordinary stones. Non-professionals can't tell. In fact, many professionals can't see it either (that's why they say gambling stones). As a non-professional (of course, so am I), the discoverer should have found some exposed stones. If not, it may be fake news. We can't know more about the specific parameters of the stone and the negotiations between the buyer and the seller without the parties.
If you are interested in this aspect, have certain time and ability, know something about jade, ask some experts, or run up the mountain. It is likely to be sent. Right?
This is what I can do for you. I hope it can be adopted.