足色全美鑽石

· 鑽石重70.33卡拉
· 指環尺寸51 1/2

*拍品資料以英文為主，中文翻譯僅供參考

Accompanied by GIA report no. 5151832545, stating that the diamond weighing 70.33 carats, measuring 29.50 x 22.56 x 13.95 mm, is D colour, Flawless, together with a classification letter stating that the diamond is type IIa. Stamped PT950 for platinum. For further information on the diamond, please refer to the GIA report. Minor signs of wear to the metal. Condition as new. Gross weight approximately 14 grams.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Please note that colour, clarity and weight of gemstones are statements of opinion only and not statements of fact by Sotheby's. We do not guarantee, and are not responsible for any certificate from a gemological laboratory that may accompany the property. We do not guarantee that watches are in working order. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue, in particular to the Notice regarding the treatment and condition of gemstones and to the Notice regarding import of Burmese jadeite and rubies into the US.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

現代的古墊形切割法始於20世紀初，由古代古墊形鑽石切割法、又稱老礦式切割法演變而來。
之前最為有名的古墊形切割鑽石為重達140.64卡拉的「攝政王」鑽石，曾鑲於法國皇帝之皇冠上，現藏於巴黎盧浮宮。
「攝政王」鑽石於1698年在印度戈爾康達出土，於1704年至1706年間送往英國進行切割，是為史上第一批重要古墊形鑽石之一。
據推斷，17世紀時，此種切割方式漸漸開始取代了原有的方形切割刻面方式。
這種垂直切割，與從前的水平切割方式相反，最終推動了圓形切割方式於19世紀末出現。
此枚顯赫重要之70.33卡拉古墊形鑽石不僅經過GIA評級後被認定為白色鑽石的最高色彩與淨度等級，D色、無瑕，更為IIa類型。
此類型之寶石，在所有寶石總數中，少於2%，化學成分上更是所有鑽石中最為純淨之類型，透明度更是絕無僅有。