How much is 2k diamond worth?

Every diamond is worth what someone will pay you for it.

Best practices dictate that if you have a diamond of this weight, you should pay for a certified gemologist's certificate documenting the 4 Cs of the diamond. This way, you'll have a better understanding of the amount of money you could be willing to accept for it.

You can buy a diamond of this carat weight today on Blue Nile, and spend from US$6,700 to US$9,300, depending on the cut, clarity and colour of the diamond.