1.66 Carat Natural Black Round Diamond GIA

This 1.66 carat round diamond is graded as Fancy No Overtone Black by GIA, indicating the stone's color is pure black without secondary hues. The diamond is untreated and offered as a loose stone. Black diamonds of this size and purity are relatively uncommon in the market, as the color typically results from numerous graphite inclusions and structural defects throughout the stone's crystal lattice. GIA certification provides documentation of the stone's weight, color grade, and natural origin.