Black Diamonds:
According to an Indian Geologist, black diamonds recovered only from alluvial deposits in Brazil and the Central African Republic, came from space. Black Diamonds are sometimes referred as Carbonados, they posses an opaque quality hence can not be graded in terms of clarity. The inclusion of graphite leads to the opaque black color. Black Diamonds are genuine diamonds treated with radiation method to make the color appear black. From the naked eye the diamonds look black but matter-of factly it is very dark green. It is the radiation treatment that makes dark Green diamonds look Black