COLUMBIAN EMERALD AND DIAMOND RING IN 18KT TWO TONE GOLD COLOMBIAN EMERALD AND DIAMOND RING in 18k yellow and white gold, embellished at the apexes with an emerald of ct 2.10 and a rectangular-cut diamond (disassembled) of ct 1.90, hallmark 750, size 18/58, g. 7. Accompanied by an IGN certificate dated 13/02/2024 attesting to the characteristics of the stones and the geographical origin of the emerald.