How much is a 11.19 crts diamond in the rough worth?

As a rough stone, there is no fixed price for a diamond, because its clarity, its colour, and its cut are not determined.

Take your rough stone to a diamond cutter who can plan a cut for the stone. Once planned -- the cutter will plan a cut to highlight the rough stone's natural colour and clarity -- so that you can have your cut diamond valued.

The diamond cutter may purchase the stone from you outright, or make an agreement with you to be paid from the sale of the finished stone.