Probably the DeBeers organization.
Akbar Shah from India with a not known address today..
Mother Nature made the world's biggest diamond.
The Exxon oil company is the biggest petrochemical company in the world.
Studio Ghibli was ranked as the biggest anime company in the world.
The term kaşıkçı elması translates (loosely) from the Turkish to the Spoonmakers Diamond, a fabulous diamond that is the pride of the Topkapi Museum. You can read more about it, below. No, this pear-shaped, 86 carat stone is not the biggest diamond in the world.
In South Africa
One of the most famous company is Graff Diamonds, it is one of the biggest company in the world that produce diamonds. Also some other known companies are:TaheraDiamond Coorporations, Firestone diamond mining and many more.
bimbo bakeries USA is the biggest company in the world
The largest diamond mine in area is in Botswana, in Africa: The Orapa diamond mine. Read more about it, below.
nokia
Mars
Toyota