On January 26th 1905 the Cullinan Diamond was found in the Premier No. 2 mine near Pretoria in South Africa.
The diamond, which is the largest gem-quality diamond ever found, is known as the Star of Africa and weighted 3,601.75 carat before being cut.
The diamond was cut into 9 large and 96 small diamonds. The largest diamond, the Cullinan I, or the Great Star of Africa, is a 530.2 carat pear shaped diamond that is set in the head of the Sceptre with the Cross, one of the British Crown Jewels. The second was also used in the Crown Jewels, in the Imperial Crown.
Image: See page for author [Public domain], via Wikimedia Commons (commons.wikimedia.org/wiki/File:Cullinan_diamond_rough.jpg)