Emerald, diamond, onyx and sapphire pendant-necklace, Mauboussin, circa 1925.    The pendant set with a cushion-shaped emerald weighing 25.50 carats, framed by calibré-cut emeralds and old European-cut, pear-shaped, marquise-shaped and baguette diamonds, anchored by 2 articulated fringes set with emerald-cut and baguette diamonds, calibré-cut emeralds and onyx segments, accented with old European-cut diamonds, sapphires and emeralds, total diamond weight approx 13.95 carats. Via Sotheby’s.