not need to ask here. just go to this sites and read for
yourself.
http://www.theatlantic.com/magazine/archive/1982/02/have-you-ever-tried-to-sell-a-diamond/4575/
those that are about 1 or 2 carat and below are actually
worthless.
diamonds got value only if they are large and big , more than 5
carat , and must be
100% clear. Because they are a rarity.