AN EMERALD AND DIAMOND 'TOI ET MOI' RINGAN EMERALD AND DIAMOND 'TOI ET MOI' RINGTwin-set with a circular-cut emerald and a round brilliant-cut diamond, weighing 5.78 and 4.10 carats respectively, to the pavé-set diamond shank; estimated total remaining diamond weight 3.09 carats; mounted in platinum; size 6Accompanied by a Gübelin report stating that the natural emerald originates from Colombia, green colour, with no indications of clarity enhancement. Also accompanied by an Information Sheet on untreated emerald. Report #21051147, dated 1 June 2021. Accompanied by a GIA report stating that natural diamond is J colour, VS2 clarity. Report #2141804595, dated 6 February 2020.5.78克拉天然未經淨度處理哥倫比亞祖母綠配4.10克拉天然J色VS2淨度鑽石戒指其餘鑽石共重約3.09克拉,戒圍6,附Gübelin及GIA證書Colombian 'No Oil' EmeraldsLauded as amongst the world's most desirable gemstones, emeralds have a history dating back to ancient civilisations in Asia, Africa, India and South America, with the first known emerald mines discovered from as early as the third century BC in Egypt. From these ancient mines in Egypt through to the discovery of deposits in Colombia in the mid-16th century, emeralds have long been prized and used as symbols of wealth and status. From the bygone Iranian dynasty, Queen of England to Empress Dowager Cixi of Chinese Qing dynasty, emeralds are treasured by royals of the world. Colombian emeralds, with their characteristic bluish green colour, are deemed the purest in the world, and these examples which are free from any form of treatment or enhancement, otherwise known in the trade as 'no oil', are exceptionally rare.哥倫比亞「無油」祖母綠被譽為世界上最令人嚮往的寶石之一，其歷史可追溯到亞洲、非洲和南美的古代文明時代，最早發現的祖母綠礦可追溯到公元前三世紀的埃及。從埃及的這些古老礦山到16世紀中葉在哥倫比亞發現的礦藏，祖母綠一直以來備受珍視並被用作財富和地位的象徵，遠至伊朗皇朝，近至英國女皇皆擁有大量的祖母綠飾物，慈禧太后的金絲被亦鑲了兩顆逾八十克拉的祖母綠。除哥倫比亞外，俄羅斯、巴西、津巴布韋、坦桑尼亞、贊比亞等國家都相繼發現祖母綠礦，但質素及價格始終不及哥倫比亞祖母綠。哥倫比亞祖母綠擁有其標誌性的藍綠色，在地質上，被認為是世界上最純淨的祖母綠，未經任何形式的處理，實為非常優質「無油」哥倫比亞祖母綠之範例，非常罕見，是收藏與投資界內一樣上乘的珍寶。