This is what we call high-end bluff stone. A stone that after setting will look a lot more expensive and more high-end.

Such bluff stones exist on multiple levels of pricing. Could be something that is priced at say for example , 800 a carat. And the expectation is that after setting it may look like a $2,000 stone. Same for a 3k stone that can look like. 5-8k stone after setting and so on+