Jean Schlumberger for Tiffany & Co. Diamond 'Sixteen Stone' ring, designed as a continuous line of eight pairs of brilliant-cut diamonds between 18ct gold 'X' shaped wire motifs, the diamonds together weighing approximately 1.14 carats, mounted in platinum and 18ct gold, size J1/2, signed Tiffany & Co., Schlumberger. Notes, a Schlumberger classic, this iconic design is strongly defined by a repeating 'X', an ideogram for balance and harmony.