```
Gambling on stones comes in two types. The first type is "semi-gambling," which simply means cutting a small piece off the raw stone or grinding off a bit of the surface. If green is exposed, it indicates the presence of jadeite within the stone, and you can roughly judge the variety and color of the jade by the intensity of the green.
Some people may sell these raw stones to others, or businesses might even offer a high price to buy them back.
In Area C, those stones priced in the millions, some have already shown green, clearly indicating jadeite within. However, what specific type it is would still need to be gambled on, which is why Yulin Zhai is willing to pay a high price to buy them back.
Of course, not all transactions are guaranteed to make money. These raw stones might turn out to be of the "glass variety," or they might just be the most common type of jadeite.
