![](https://images.news18.com/ibnlive/uploads/2019/05/diamonds.jpg)
For this process to occur, a large slab of sea floor would have to slip down to a depth of more than 200 kilometres below the surface quite rapidly, in a process known as subduction in which one tectonic plate slides beneath another.
from Top Buzz News- News18.com http://bit.ly/2wuJcIk
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