Diamond ring, circa 1930; of plaque design, composed of a centre row of four channel-set French-cut diamonds, flanked by a pair of bezel-set baguette diamonds and carre-cut diamonds, the surround accented with 24 bead-set old mine-cut diamonds, the diamonds together weighing approximately 1.72 carats, mounted in 18ct white gold, size K, total gross weight approximately 5 grams.