Cullinan Diamond
The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing , discovered at the Premier No. 2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the mine's chairman.
Rolls-Royce Cullinan
The name "Cullinan" was confirmed by Rolls Royce on 13 February 2018. It is named after the Cullinan diamond, the largest diamond ever found at 3100 carats.