The tapering contoured collar composed of articulated panel linking, centering an emerald-cut emerald weighing approximately 16.95 carats, amid a row of smaller emeralds weighing approximately 17.50 carats, accented with round diamonds weighing approximately 17.35 carats, further decorated with 'X' and chevron motifs, mounted in 18k gold, inner circumference 14 1/4 inches