Because ”Diamonds are forever” - Shirley Bassey
The Spirit of de Grisogono at 312.24 carats is the world's largest cut black diamond, and the world's 5th largest diamond, period. In a white gold mouting, it is set with 702 white diamonds totalling 36.69 carats. The diamond had a rough weight of 587 carats and was mined in western Africa before being brought to Switzerland where it was cut.