An Important Emerald and Diamond Ring
The step-cut emerald, weighing 9.98 carats, between two baguette-cut diamond shoulders, diamonds approximately 1.45 carats total, ring size 6?
注脚
Accompanied by a SSEF report stating that the natural emerald has no indications of clarity modification and originates from Colombia. Report number 90326, dated 8 March 2017.Accompanied by an AGL (American Gemological Laboratories) report stating that the natural emerald has no indications of clarity enhancement and originates from Colombia. Report number 8085858, dated 16 February 2017.Accompanied by a Gubelin report stating that the natural emerald has no indications of clarity enhancement and originates from Colombia. Report number 17014009, dated 10 February 2017. 9.98克拉天然無經處理哥倫比亞祖母綠配鑽石戒指鑽石共重約1.45克拉,戒指尺寸6?,附SSEF,AGL及Gubelin證書'Live online bidding' will not be available for this lot.請注意:此拍品並不接受網上即時競投。Colombian "No Oil" EmeraldsColombia accounts for approximately 70-90% of the international emerald market. Geologically speaking, Colombian emeralds are said to be the purest emeralds in the world because the deposits are the only ones on earth found in sedimentary host rock, rather than in igneous rock. Typically, emeralds contain various inclusions that are visible to the naked eye. While most emeralds on the market today have been enhanced in some way, untreated emeralds – referred to in the trade as "no oils" – are exceptionally rare, and when combined with a rich colour and a clean crystal with very few/no inclusions, their rarity and hence desirability increases significantly. Top quality "no oil" Colombian emeralds of fine, transparent material are highly sought after today.哥倫比亞"無油"祖母綠哥倫比亞祖母綠佔國際市場的70-90%。在地質上,哥倫比亞祖母綠被認為是世界上最純淨的祖母綠,因為它是地球上唯一的沉積岩礦床,而不是火成岩鑛床。一般的情况下,祖母綠都有肉眼可見的內含物。目前市場上大多數祖母綠在某種程度上都有淨度優化處理,而未經處理的,在業內被稱為"無油"的祖母綠,它們非常罕見,若未經處理的祖母綠兼具濃郁顏色及高淨度,只有少許或無內含物,更為珍罕且備受追捧。現今,最優質、清澈明亮的"無油"哥倫比亞祖母綠深受眾多藏家的喜愛。