Recent Posts About Black Diamonds


Why is a diamond so hard?

March 19, 2017

The diamond is an atomic crystal whose carbon are held together in a strong and rigid lattice. diamond graphite This accounts for the diamond’s extreme hardness and resistance to deformation but the fact that the carbon atoms are not packed closely together means the diamond possesses a very high degree of thermal conductivity. The density …

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April Birthstone – Diamond

November 18, 2016

Diamond scores #10 on the Mohs scale, and good is to excellent in toughness. Sources are South Africa, Australia, Brazil, Botswana, China, Canada, Ghana, Guyana, Indonesia, India, Namibia, Sierra Leon, Tanzania, Democratic Republic of the Congo, United States, Venezuela.  India was the world’s only major source until the 18th century. Then Brazil’s alluvial deposits were discovered …

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