The teacher and the student

How can we tell good jade from bad jade? How does an amateur distinguish an interesting piece from a less interesting one?

When it comes to jade, people come and tell me they want to buy a piece, and ask how to look at it. The first thing I always tell them is: do not buy jade. I think you should first learn about something before you take an action. Sometimes people bring me raw materials to evaluate, but their dream and their heart is often broken. For example, people think jade is green outside and inside, but in 99.9% of cases, the reality is that it's not. People who sell jade shine up the brightest parts and make people believe the green will show up inside, but it actually doesn't. And they show jade under the brightest possible light. But when cut, it's not green. And the dream is broken.