Do you use Calibrated Black Diamonds in your jewelry? Well, then you are in the correct place. Avellinno diamonds offer you the calibrated black diamonds lot at the best prices over the web. Calibrated black loose diamonds are absolute jet black in color. Our quality artisans craft it out of rough diamonds in a way that it makes them sparklingly brilliant. You will find 2 quality of black diamonds in these lots like AAA and AA you may also find A quality too. We have 1.00 mm to 3.50 mm in a calibrated black diamond lot. Avellinno diamonds also make black diamonds in Sizes from 3.50 mm to 20mm too. Calibrated Black diamonds are mostly in round brilliant cut shape. They are also available in fancy shapes like Princess cut, emerald cut, pear cut, oval cut, rose cuts too. The use of Calibrated natural loose black diamonds is most common in fine diamond jewelry designs.