How much is a 12 carat diamond?

The value of a diamond depends on its cut, colour, carat weight and its clarity. A local jeweler can answer your question.

Another Answer

You can buy an 11.91 carat stone today on Blue Nile and spend about US$554,080, or buy a 12.35 carat stone and spend about US$1,176,532. The difference being in the colour, clarity and quality of the round cut.