Wholesale and to the trade, the largest supplier is probably DeBeers.
The largest supplier of raw, mined diamonds is probably the DeBeers organization. Read more about them, below.
Iron ore(World's largest supplier), Coal(Worlds largest Supplier), Bauxite(Worlds largest supplier), Gold(worlds largest nugget), Copper, Tin, Opals(worlds only source of black opal), Diamonds(2nd largest after south Africa but produces yellow diamond valued for industrial use), Uranium(worlds largest supplier) Natural gas(worlds largest supplier) Oil and Shale oil, magnesium, manganese, zinc, salt, nickle, mineral sands
libya, as it is the largest oil supplier in the world
Much of Israeli manufacturing occurs in the Tel Aviv metropolitan area, in cities like Or Yehuda.
Qualcomm
Lexington is the smallest town in Kentucky which is the world's largest supplier of farm gates.
Halliburton's purchase of Dresser Industries made Halliburton the world's largest supplier of oil field services.
The number one supplier for oil in the US in 2013 was Canada. The second largest supplier was the Persian Gulf.
Australia
India
Nevada.