A Rare and Fine Fancy Intense Green Diamond and Diamond Ring

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    • One cushion modified-cut Fancy Intense Green diamond, 5.62 carats

    • Surrounded by eight brilliant-cut diamonds, totaling 4.46 carats

    • 18 karat white gold

    • Photographed unmounted

    • Size 5½

  • (5.62-carat Green Diamond)
    GIA report, numbered 5141067571, dated 16 February, Fancy Intense Green colour, VS2 clarity.
    (Eight round Diamonds)
    Eight GIA reports, 0.62 to 0.50 carat, all F colour, VS2 clarity, Excellent Cut, Polish and Symmetry.

    附 九張美國GIA 證書

  • Catalogue Essay

    The occurrence of natural green diamonds are so rare that historically very few examples were documented. This explains why this unusual green gem, unlike its fancy coloured counterparts, remains less known to the majority of the general public. With the growing awareness and demand for extraordinary coloured diamonds, green diamonds have risen as a collectors’ favourite in the gem world.

    Diamonds get a green colour in nature when it is exposed to radiation for a significant long period of time, typically for millions of years in rocks that emits alpha-particles. The radiation causes a defect in the lattice structure of the diamond which subsequently alters its optical characteristics. However, most of these ‘green’ diamonds only possess a green outer coating. This ‘skin colour’ is refined to the surface that was in contact with the rocks. Once cut and polished, such diamonds will lose all of their green colour and appear to be colourless or yellowish. Only in extremely rare cases, the intensity of radioactivity could penetrate through the entire diamond rough, causing a homogenous green ‘body colour’.

    Purity of this green body colour is the next important factor determining its value. Blue and yellow are the most commonly found secondary colours of a green diamond. Pure green colour is exceedingly unusual, fancy green colour more so.

    In the past few decades, only a number of the purest green diamonds appearing in international auction market managed to obtain the highest ‘fancy vivid green’ colour grading from GIA. The per carat price soared from over US$700,000 in 1999 for a 0.99 carat stone to approximately US$1.2 million for a 2.52 carat stone in 2009. Last year, the largest fancy vivid green diamond ever to appear at auction, weighing 5.03 carats, was sold for over US$3.3 million per carat. Superb green diamonds are evidently finding their way into the international open market with promising potential.

    Phillips is proud to offer a green diamond of comparable significance this season. A rich, uniform and saturated green body colour is not the only striking characteristic of this important coloured diamond, its remarkable size is another attribute deeming it highly exceptional. While most green diamonds very rarely exceeds 2 carats, this cushion-shaped fancy intense green diamond weighs close to 6 carats. Thoughtfully set in a elegant ring exhibiting its innate beauty, this jewel is more than worthy of any serious gem connoisseur’s love and acclaim.

  • Catalogue Essay

    天然的綠色鑽石極為稀有,所以歷史上有關於綠鑽的記戴也是少之又少。這也說明了為什麼在彩鑽之中綠鑽較為少人認識。隨著近年彩鑽漸為人所認識,市場上對頂級彩鑽的需求亦日益增加,綠鑽也漸漸在藏家級寶石中穩佔一席位,受到熱烈的追捧。

    鑽石之所以會呈現綠色是因為原石在地底受到幅射的影響,在放射α粒子的礦石裡經歷了千萬年的時間,晶體結構上出現了一個缺憾,改變了鑽石的光學特性,讓我們看到綠色。但許多此類型鑽石的綠色只限於最表層,也就是跟礦石接觸的那一個表面。一旦經過切割打磨,這個表層就會被去掉,令它變成無色或徵黃的鑽石,不再是看得見綠色的綠鑽。如果想綠色在整顆鑽石裡都分佈平均,幅射就得穿透整塊原石,但這個機會卻是萬中無一。

    此「綠」色的純正度也是決定綠鑽價值的重要因素。許多時候此主色都會帶有黃或藍的副色,所以能擁有純正綠色的鑽石絶對是寥寥可數,要逹到GIA「彩綠」色級別的鑽石更加是稀少得驚人。

    在過往數十年來,國際拍賣場上只出現過幾顆能取得美國GIA「鮮彩綠色」的美鑽,其每克拉價格從1999年的70萬美金﹙0.99克拉綠鑽﹞跳升至2009年的120萬美金﹝2.52克拉綠鑽﹞。而上一年,一顆重5.03克拉,拍場上迄金最大的鮮彩綠鑽,以破紀錄的每克拉逾330萬美金成交,成為寶石界的佳話,可見品質出眾的綠鑽在國際市場上表現出非常好的潛力。

    富藝斯十分榮幸能在是次秋拍中呈獻同樣是份量十足的稀有綠鑽。此美鑽不但擁有頂級綠鑽必備之均勻、純正及飽和的綠色,其重量達到5.62克拉,綠鑽之中更加是無與倫比,份量令人驚嘆。當大部分綠鑽都不超過2克拉,此綠鑽卻能夠擁有接近6克拉,在濃彩綠鑽中無疑是皇者中的皇者。加上簡約的鑲嵌,盡顯綠鑽本身的傲人特質,極具收藏價值,珍貴之處不言而喻。

607

A Rare and Fine Fancy Intense Green Diamond and Diamond Ring

5.62克拉 VS2 濃彩綠色鑽石 配 鑽石戒指

Estimate
HK$22,000,000 - 26,000,000 
$2,800,000-3,300,000

Contact Specialist
Terry Chu
Head of Jewellery, Asia, Senior Director
+852 2318 2038

Jewels and Jadeite

Hong Kong Auction 27 November 2017