You can read more about the Great Exhibition of 1851 at the Crystal Palace where the Kor-i-noor diamond was on display. At the time, that was the largest diamond known.
The exhibition intended to display the 'works of industry of all nations'.
As to why this diamond in this exhibition, that detail is lost to history, unless one wants to consider the Kor-i-noor diamond a 'trophy' example on display from the India colony.
You can read more, below.
The Tiffany Yellow Diamond is the worlds second largest canary yellow diamond. In 1983 the diamond was appraised and valued at 12 million dollars.
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
You can review the list, below, of named diamonds, none with the exact carat weight you describe, and documentation of the fact that a 99 carat diamond is not quite the world's largest.
The largest natural diamond found to date weighed more than 3,000 carats, and fit into the palm of a grown man's hand.
Worlds largest animal: Blue Whale
worlds largest producer of nickel
USA has the worlds largest rail network.
the worlds largest swamp is the Sudd thx for asking
The worlds largest natural magnet is the earth itself.
ch did the worlds largest lollipop weigh
None of them. It is the second largest producer of silver, behind Peru. It is also on the top 20 of gold production, and the diamond production is almost negligible.