COLUMBIAN EMERALD AND DIAMOND RING IN PLATINUM AND 18KT YELLOW GOLD COLOMBIAN EMERALD AND DIAMOND RING in platinum and 18kt yellow gold, embellished at the centre with an octagonal cut emerald of ct 2, flanked by princess-cut diamonds of ct 1 and brilliant-cut diamonds of ct 0.15, hallmarks PT 950 and 18kt, size 15/55, gr. 5. Accompanied by an IGN certificate dated 29/10/2024 attesting to the characteristics and geographical origin of the emerald.