Sapphire and diamond ring, Oscar Heyman & Brothers

Claw-set with a cushion-shaped sapphire weighing 17.84 carats, within a line of pear-shaped diamonds, further decorated with brilliant-cut stones, mounted in yellow gold and platinum,

The correct estimate is CHF 100,000 - 165,000 / US$ 85,000-150,000. Stamped 750 for gold, Plat and 950 for platinum. Indistinctly numbered due to ring sizer ?0504. Please refer to AGTA report for details on the sapphire. Further accompanied by AGL report no. ID 14122 stating that the sapphire is unheated. Sapphire good colour saturation, typical crystal inclusions visible with magnification. Brilliant-cut diamonds stated to weigh approximately 0.65 carat, pear-shaped stones stated to weigh approximately 3.75 carats in total, estimated colour H-I, VS clarity on average. In 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. 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."