A small Black Diamonds, Its very minute to small size 57 faceted diamonds from 1 mm to almost 3 mm sizes in the round brilliant cut. The loose small black diamond is absolutely jet black in color. The calibrated is has 10 hardness on moh's scale. Black calibrated lot is calibrated so having the same mm size. It can go into the making of any jewelry. black diamond is available in AAA and AA quality. Raw diamonds are also available in the market, and if want to know How to Identify a Raw Black Diamondproperly then get some exact knowledge about them.