How much is the diamond in the film Blood Diamond worth?

Answer 1

Many lives of innocent people. Much more than a diamond can ever be worth.

Another Answer

In this film, one character being forced at gunpoint to mine by hand for diamonds finds an "enormous pink diamond."

Visually, it appears to be several inches tall and perhaps an inch wide -- these estimates are approximate: the stone is photogenic. In dialog, it is described as having a 'sweet pink colour'. From a plot point of view, the stone is probably fairly clear: a gem-quality, highly valuable find.

No hard number is ever attributed to the stone, but in the final moments of the film, you can see a corporate diamond executive wearing a suit, arriving in a large, chauffeur-driven car at the front of a central London vault storage facility, wheeling in a container we are lead to believe contains this enormous pink diamond.

When cut, most diamonds lose about 60% of their carat weight, and until each is cut, has no attributed value except as a raw diamond. The value of every cut diamond is based on its colour, cut, clarity and carat weight, and we never get this much information from the film. (Wholesale=raw diamonds; retail=cut diamonds.)

From Forbes review of the Christie's Sale of Magnificent Jewels in April 2012:

"The Clark Pink," a 9-carat, cushion-cut fancy vivid purplish pink diamond ring by Dreicer & Co., circa 1910, from the Huguette M. Clark estate, sold for $15.7 million, making it the most valuable pink diamond ever sold in the United States."