World's Largest, Rare Diamonds Form In Earth's Deep-Mantle Metallic Liquid

Huge diamonds have been salvaged from deep inside the bowels of the earth. They come from the mantle and have a different makeup from ordinary diamonds.

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This is a close-up view of a metallic inclusion. The inclusion is reflective/silver in appearance, surrounded by a black, graphite-bearing decompression crack. Image is 2.56 mm wide. Photo by Evan Smith; GIA

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