Cullinan Diamond mine tour – an overground tour of the world famous Cullinan Diamond mine where the largest diamond ever found in the world was mined, weighing 3,106.75 carats producing 96 polished diamonds, the largest of which is named Great Star of Africa and at 530.4 carats is the largest clear cut diamond in the world. The second-largest is the Second Star of Africa at 317.4 carats.
Both are part of the Crown Jewels. Seven other major diamonds, weighing a total of 208.29 carats (41.66 g), are privately owned by Elizabeth II, who inherited them from her grandmother, Queen Mary, in 1953. The Queen also owns minor brilliants and a set of unpolished fragments.