State the one use of black diamonds

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Solution

Black diamonds:
Black Diamond is the toughest form of natural diamond.
It is an impure form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon.
Black diamond is commonly known as the Carbonado.
Used of Black diamonds:
Due to their hardness, black diamonds are used in various cutting tools.
Coal is known as Black Diamond.
This is because coal is used for a variety of purposes, such as:
A source of fuel in the kitchen
As a raw material in industries
Coal is primarily used as fuel to generate electric power in power plants.

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