The Cullinan was split and cut into 7 major stones and 96 smaller stones. Edward VII had the Cullinan I and Cullinan II set respectively into the Sceptre with the Cross and the Imperial State Crown while the remainder of the seven larger stones and the 96 smaller brilliants remained in the possession of the Dutch diamond cutting firm of Messers I. J. Asscher of Amsterdam who had split and cut the Cullinan, until the South African Government bought these stones and the High Commissioner of the Union of South Africa presented them to Queen Mary on 28 June 1910.
Cullinan I is a 530.2 carat, pear cut diamond and the largest of the Cullinan diamonds. It is also known as the Great Star of Africa, and was set in the head of the Sceptre with the Cross which was reworked for this purpose. It may also be hung as the pendant, on its own or from Cullinan II in a brooch. For this purpose the diamonds have both been fitted with two tiny platinum loops on the edges.
Cullinan II, the Second Star of Africa, weighing 317.4 carats and having a rectangular cushion cut, was set in the front of the circlet of the Imperial State Crown. It may also be used together with Cullinan I as a brooch.
Cullinan III is a pear cut, 94.4 carat diamond known as one of the Lesser Stars of Africa (along with Cullinan IV). Queen Mary, the queen consort of George V, had Cullinan III set in the surmounting cross of her new crown for her coronation in 1911. In 1914, however they were replaced by crystal models. After that, Queen Mary mainly wore the crown as a circlet, meaning Cullinan III was not needed. Since Queen Mary's death on March 24, 1953 her consort crown has remained unworn and it is thus unknown if Cullinan III will ever be used again to surmount the Crown of Queen Mary. Presently Cullinan III is most frequently worn as a brooch, in combination with Cullinan IV.
Cullinan IV is square cushion cut and weighs 63.6 carats. It was also set in the crown originally, as part of the circlet, However it too was removed in 1914. Since then it was been worn as a brooch along with Cullinan III. Collectively the two diamonds are affectionately known as 'Granny's Chips', by Queen Elizabeth II. This was revealed by Queen Elizabeth II on the 25th of March 1958, while she and Prince Philip were on a state visit to the Netherlands. As part of their tour of the country, the couple visited the Asscher diamond works, where the diamond had been cut fifty years earlier. The occasion marked the first time the Queen had publicly worn the brooch. During the event, the Queen unpinned the brooch and offered it for examination by Louis Asscher, the brother of Joseph Asscher, who had originally cut the diamond. Elderly and almost blind, Asscher was deeply moved by the fact the Queen had brought the diamonds along with her, knowing how much the gesture would mean to him, seeing the diamonds after so many years. The Queen has worn the brooch no more than six or seven times in public during her reign.
Cullinan V is heart cut and weighs 18.8 carats. It is set in the center of a brooch forming a part of the stomacher of the diamond and emerald Delhi Durbar Parure. The brooch was designed to show off Cullinan V and has a large number of smaller stones set around it. The brooch can also be attached to Cullinans VI and VII to become a large stomacher, often worn by Queen Mary. Queen Elizabeth II has worn this brooch many times, perhaps making it her most worn piece of jewellery.
Cullinan VI is also marquise cut and weighs 8.8 carats. It hangs from the brooch containing Cullinan VIII and forming part of the stomacher of the Delhi Durbar Parure. Cullinan VI along with Cullinan VIII can also be fitted together to make yet another brooch, surrounded by some 96 smaller diamonds. The design was created around the same time that the Cullinan V heart shaped brooch was designed, with them both having a similar shape.
Cullinan VII is marquise cut and weighs 11.5 carats. Originally given by Edward VII to Queen Alexandra. After his death she gave this stone to Queen Mary, who had it set as a pendant hanging from the diamond and emerald Delhi Durbar Necklace, of the Delhi Durbar Parure.
The Cullinan VIII is set in the center of a brooch forming part of the stomacher of the Delhi Durbar Parure. It is cushion cut and weighs 6.8 carats. Together with the Cullinan VI it forms a brooch. Queen Elizabeth II inherited this brooch in 1953, however in contrast to the Cullinan V heart brooch, she has never been seen wearing it in public, claiming that 'it gets in the soup'.
The Cullinan IX is the final large diamond to be obtained for the Cullinan. It is pear cut and weighs 4.4 carats. It is set in a platinum ring, known as the Cullinan IX Ring.