Large emerald ring set with an approximate 15.76ct square emerald cut, possible Columbian origin, strong pale green transparent coloured emerald, 14.31 x 15.01 x 9.95 mm. Possible oiled treatment. Surrounding the emerald are smaller round diamonds being 57= 0.15ct and 24= 0.72ct all are H\G colour and Si clarity with another16= 0.04ct G\H colour and Si clarity diamonds. Weight 11.3 grams. Size: Q.