Your answer depends on the type of diamond mining that interests you. The types are Artisanal Mining, Hard Rock Mining, Marine Mining, Open Pit Mining and
Placer Mining.
You can read about the equipment used in each type of mining below:
http://www.allaboutgemstones.com/diamond_mining.html
bulldozers and dredgers
The Diamond Mine was created in 2005.
You can mine diamonds in the Arkansas Diamond Mine, in Murfreesboro, Arkansas, as below.
Without endorsement, you can follow the link below, to learn more about the tools and machines used in cutting and polishing diamonds.
The largest diamond mine in area is in Botswana, in Africa: The Orapa diamond mine. Read more about it, below.
Ekati Diamond Mine was created in 1998.
You can use an iron, gold, or pre-existing diamond pickaxe to mine diamond ore or diamond blocks
There are no animals in the Diamond Mine -- they are on the Safari. (You have to do it first to get the hardhat to enter the Diamond Mine.)(see the related question below)
The name of the famous diamond mine is Western Australia is Argyle Diamond Mine. It is famous for its pink diamonds.
They are usually lowered down in pieces - and assembled at the site where they're to be used.
um i don't think you can mine on Pokemon diamond and pearl
The world's largest diamond mine is located in Botswana. It is of open pit construction and the area of it makes it the world's largest diamond mine.