Diamonds are known as a rare mineral, carbon. The carbon atom surrounds four other carbon atoms connected to strong covalent bonds. Diamonds are considered to be the hardest known natural materials. They are also chemically resistant, have excellent thermal conductivity and are characterized by special optical properties such as refractive index height , High dispersion, and high luster, these unique characteristics have made this the most precious gemstone in the world, and in this article is talking about the expansion of this metal and its source
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