All the nine larger Cullinan diamonds are part of England's crown jewels.

The Cullinan II, also known as the Lesser Star of Africa, in mounted on the band of the royal English crown. It is impressively sized at 317.20 carats.

The pear-shaped Cullinan III, weighing 94.60 carats, is part of Queen Mary's crown and can be combined with the cushion-shaped Cullinan IV (63.60 carats) to form a pendant brooch.

The Cullinan V (pear shape, 18.80 carats), originally made into a brooch for Queen Mary, later replaced the Koh-i-noor on the circlet of her crown.

The Cullinan VI (11.50 carats) became a drop on a diamond and emerald necklace, while the Cullinan VII (8.80 carats) and VIII (6.80 carats) were set as a pendant and the centre of a diamond brooch.

The Cullinan IX, the smallest at 4.39 carats, was mounted as a ring for Queen Mary. Now, it is sometimes worn by Queen Elizabeth II.

Information courtesy: Internetstones.com