Lot 402 , An emerald and diamond ring, early 20th century

An emerald and diamond ring, early 20th century, claw-set with a step-cut emerald measuring approximately 4.5 x 4 x 3.1mm, weighing approximately 0.40 carats, flanked by circular-cut diamonds totalling approximately 0.40 carats, to curving shoulders set with single-cut diamonds, mounted in gold and platinum, size M1/2, stamped 18CT PLAT, gross weight approximately 3 grams
£280-380