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https://en.wikipedia.org/wiki/Black_Diamonds_(racial_term)
May 26, 2011 · Black Diamonds is a collective term that is used pejoratively in South Africa to refer to members of the new black middle class.The term was not originally derogatory. It was coined by TNS Research Surveys (Pty) Ltd and the UCT Unilever Institute to refer to members of South Africa's fast-growing, affluent and influential black community. However, the term evolved negative connotations …Estimated Reading Time: 3 mins
https://en.wikipedia.org/wiki/Diamond
Diamond is a solid form of pure carbon with its atoms arranged in a crystal. Solid carbon comes in different forms known as allotropes depending on the type of chemical bond. The two most common allotropes of pure carbon are diamond and graphite.In graphite the bonds are sp 2 orbital hybrids and the atoms form in planes with each bound to three nearest neighbors 120 degrees apart.Crystal class: Hexoctahedral (m3m), H-M symbol: (4/m …
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