<p><font color="#424242">How does Seven sky select its diamonds? </font></p><p>Seven sky not only selects its diamonds according to the 4 Cs standards laid down by the Gemological Institute of America (GIA), but takes this rigor to the highest level, selecting only the top categories of the 4 Cs. It is one of very few jewelers to offer such remarkable and rigorous quality standards.</p><ol><li>To guarantee a rare and extraordinary stone, the 4 Cs are essential but not sufficient in themselves. &nbsp;Seven sky goes even further by imposing an additional constraint, the fifth C, for "character".</li></ol>