COLOMBIAN EMERALD AND DIAMOND CONTRARIA RING IN PLATINUM COLOMBIAN EMERALD AND DIAMOND CONTRARIE RING in platinum, embellished at the apexes with an octagonal-cut Colombian emerald of approx. ct 1.80, flanked by an octagonal-cut diamond (disassembled) of ct 2.37, colour J, purity Vvs1, size 12/52, gr. 5. Accompanied by an IGN certificate dated 16/02/2024 certifying the characteristics and origin of the emerald.