An emerald and diamond ring, designed as a cluster of square outline, collet-set with a step-cut

An emerald and diamond ring, designed as a cluster of square outline, collet-set with a step-cut emerald, within a double border of brilliant-cut diamonds, mounted in gold, size Q1/2, stamped 750

Accompanied by report no. 20386 from the Gem & Pearl Laboratory, stating that the emerald measuring approximately 8 x 8 x 4.5mm is of Colombian origin, with indications of minor clarity enhancement