• 橢圓形天然藍寶石重50.85卡拉
• 配鑽共重約1.90卡拉
• 18K白色黄金鑲嵌
指環尺寸：5½

Colour and Clarity: According to AGL and GRS reports, the oval sapphire is natural, of Ceylon origin, with no indications of heating. GRS report further states that this sapphire is of "GRS-type Royal Blue" colour. Separate Gübelin report states that this sapphire is of Madagascar origin, with no indications of heating. Please refer to the reports for details. In our opinion, the sapphire is of medium deep, strong blue colour, eye clean. Upon 10x loupe, there are some minor fingerprint inclusions, not noticeable. Diamonds are about F to H colours, VS clarity. Condition: Karat white gold ring mount, in very good condition.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. 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. Illustrations in the catalogue may not be actual size. Prospective purchasers are reminded that, unless the catalogue description specifically states that a stone is natural, we have assumed that some form of treatment may have been used and that such treatment may not be permanent. Our presale estimates reflect this assumption.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.

• 附美國AGL（編號CS 53361 ，日期2013年2月4日）及瑞士GRS證書（編號GRS2013-011199，日期2013年1月3日）• 藍寶石產地為斯里蘭卡 • 未經加熱處理 • GRS指藍寶石呈「皇室藍」色
• 附瑞士Gübelin證書（編號12111078 ，日期2012年12月5日）• 藍寶石產地為馬達加斯加 • 未經加熱處理