Diamond is derived from Greek word "ADAMAS" meaning PROPER.It is an allotrope of carbon.It is one of the parent forms of carbon.It is found in South Africa,Brazil,Congo,Angola,Tanzania and USA.The mass of a diamond is measured in Carrats (1 carrat is =200 mg).
Diamond is the second most stable form of carbon, after graphite.Colors in diamond originate from lattice impurities.Nitrogen most common impurity found in gem diamonds. Nitrogen is responsible for the yellow and brown color in diamonds. Boron is responsible for the gray blue colors.Color in diamond has two additional sources:
  • Irradiation that causes the color in green diamonds
  • Physical deformation of the diamond crystal known as plastic deformation.


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