Diamonds are mined through three types of diamond mining: alluvial mining, pipe mining, and marine mining.

Alluvial diamond mining takes place in riverbeds and beaches, where natural forces like wind, rain, and water currents wash diamonds from their initial deposits in kimberlite pipes to beaches and riverbeds over thousands of years.

Pipe mining is when diamond ore is extracted from volcanic pipes. The pipes are mined by digging downwards from the surface level or by sinking a shaft or slope from the surface level to the diamond-bearing pipe below.

Marine mining involves utilizing special mining ships to harvest diamonds from the ocean floor.

I hope that helps. Let me know if you have any other questions.
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