Art Deco 0.46 Carat Emerald & 0.90 Carat Diamond Three Stone Ring, circa 1930A heart stoppingly beautiful antique emerald and diamond three stone ring. The square cut Colombian emerald in the centre weighing approximately 0. 46 carat is mounted in a 18k yellow gold coronet collet. The centre stone is flanked by a pair of high white and very lively old European cuts graded G to H colour, VS clarity which weigh just under 0. 50 carat each (approx.). The diamonds are in platinum settings which sit atop yellow gold finger bezels.