Kimberlite is a kind of igneous rock that’s discovered within the Earth’s mantle. It’s a darkish, greenish-black rock that’s composed of olivine, phlogopite, and serpentine. Kimberlite is essential as a result of it’s the solely identified supply of diamonds.
Kimberlite is shaped when magma from the Earth’s mantle rises to the floor and crystallizes. The magma consists of a wide range of minerals, together with diamonds. Because the magma rises, the diamonds are carried to the floor and deposited within the kimberlite.