Cullinan I - also known as The Star of Africa was named after Sir Thomas Cullinan, owner of the mining company, and currently claims the title of largest cut diamond in the world. Of all the worlds largest diamonds Cullinan I is the largest. It was cut by Asscher in Amsterdam, weighs 530.20 carats, and has 74 facets. The Cullinan now resides in the Tower of London and is set in the sceptre of King Edward VII.