18K WHITE GOLD, BLUE SAPPHIRE AND DIAMOND PENDANT. Openwork square frame set with square sapphires arranged in a light-to-dark saturation pattern, combined wt.:1.62 cts. Suspended from a diamond-set bale, combined wt.: 0.16 cts. - Blue silk cord, L: 16 in. Pendant, app. L: 1/2 in. Estimate $600-800
Sapphires range from almost colorless to medium dark blue. Eight diamonds are in the VS clarity range and are G-I in color.