This is a GIA certified natural fancy dark grey-yellowish green diamond with a weight of 1.00 carat and measures 5.45 X 5.22mm, SI1 clarity. Two carre cut white diamonds hug the center totaling 0.43 carats in prong settings. Expertly created in brightly polished 18 K white gold, this facet contrast of step cut sides amplifies the center's color.