<P> The Cullinan Diamond is the largest gem - quality rough diamond ever found , weighing 3,106.75 carats ( 621.35 g ) , discovered at the Premier No. 2 mine in Cullinan , modern - day South Africa , on 26 January 1905 . It was named after the chairman of the mine , Thomas Cullinan . </P>
<P> The Cullinan Diamond is the largest gem - quality rough diamond ever found , weighing 3,106.75 carats ( 621.35 g ) , discovered at the Premier No. 2 mine in Cullinan , modern - day South Africa , on 26 January 1905 . It was named after the chairman of the mine , Thomas Cullinan . </P>
where was the world 's largest diamond found
where was the world 's largest diamond found
the Premier No. 2 mine in Cullinan , modern - day South Africa
the Premier No. 2 mine in Cullinan , modern - day South Africa