A Rare Fancy Coloured Diamond and Diamond Pendant


The heart-shaped fancy deep green diamond, weighing 1.66 carats, within a brilliant-cut diamond double surround, some of pink tint, completed by a box-link chain necklace, length 2.2cm
|Accompanied by a GIA report stating that the 1.66 carat diamond is Natural Fancy Deep Green colour. Report number 2165762062, dated 29 August 2017.1.66克拉天然深彩綠色'長壽綠'鑽石配鑽石吊墜附GIA證書On the spectrum of coloured diamonds, green diamonds are amongst the rarest. The green hue is the result of exposure to radiation deep in the earth's mantle over millions of years. Too much exposure to this radiation renders the stone black, while too little produces a pale or light green skin which disappears when the stone is cut. Thus, the odds of finding an aesthetically-pleasing green diamond are exceptionally low, while the odds of nature producing a green diamond with a deeper saturation are even lower. The largest and most famous green diamond is the 40.70ct "Dresden Green" which is a Natural Fancy Green. It came to public knowledge in the 1700s and is part of the German Crown Jewels. Deeper saturations in any size are exceptionally rare. 在彩色鑽石中，綠色鑽石是最稀有顏色之一。 綠色色調之形成是因數百萬年來地幔深處的深度輻射所致。太多的輻射會使鑽石變黑，然而在太少的情况下颜色則會非常淡或只有淺綠色 的外皮，以致顏色在鑽石被切割及打磨時便會消失。因此，要找到令 人赏心悦目的綠色鑽石之可能性已非常低，但要找自然產生高濃飽和度的綠色的可能性甚至更低。 最大且最著名的綠色鑽石是40.70克拉的天然彩綠色"德累斯頓綠 （Dresden Green）"。於十八世紀為公眾所聞，屬德國皇室珠寶珍藏。高濃的飽和度在任何大小的綠色鑽石中都極為罕見。