Diamond mines are used for mining diamonds.
There are active diamond mines in India, Brazil, Canada, several countries in Africa, and Australia. It will not be possible to measure where the most diamonds are found until all these natural resources are exhausted.
Australia's diamond mines are major exporters of diamonds. For example, the Argyle Mine produces about eight million carats (1,600 kg) per year, and is the fourth largest diamond producing mine in the world, by volume. This is according to its Wikipedia page.
'They' in this case, is Mother Nature. From WiseGeek: "Most chocolate diamonds come from diamond mines in Australia. The natural occurring brown color is thought to be created by the earth's pressure on the diamonds deep in the earth." Chocolate diamonds earn their colour by virtue of the stone's plastic deformation.
Diamond mines are typically found in countries with rich deposits of diamond-bearing rock, such as Botswana, Russia, Canada, and Australia. In these countries, diamond mining operations extract diamonds from deep underground or from alluvial deposits in river beds.
There are no natural diamond mines in Louisiana. While some enthusiasts may search for diamonds in the state's rivers and streams, these are typically small, low-quality diamonds that are not economically viable to mine. The majority of diamonds on the market come from countries like Russia, Botswana, Canada, and Australia.
Diamonds are from diamond mines (sometime called pits) or from diamond growing labs. This is only correct for real diamonds not simulants.
Australia produces brown diamonds from their mines.
in diamond mines
There are no natural diamonds in Europe.
Most diamonds are found in countries such as Russia, Botswana, Canada, Democratic Republic of the Congo, and Australia. These countries have extensive diamond mines that produce a significant portion of the world's diamond supply.
All diamonds are erupted to the surface of the earth by volcanic pipes. Exceptions are diamonds that arrive on earth from unknown sources in space. Diamonds are found on every continent on earth except Europe and Antarctica.