Largest diamond
The Cullinan
United Kingdom ()

A 3,106-carat gem-quality rough diamond was found on 26 January 1905 at the Premier Diamond Mine, near Pretoria, South Africa, and presented to the reigning British monarch, Edward VII. Named The Cullinan, it was cut into 106 polished diamonds.

It produced the largest cut fine-quality colourless diamond, Star of Africa which weighs 530.2carats and tops the Royal Sceptre, and the Cullinan II which resides in the Imperial State crown that Queen Elizabeth II dons for the State Opening of Parliament. The Queen is said to call the smaller diamonds "Granny's rocks".