Fancy vivid yellow diamond ring

The cushion modified brilliant-cut fancy vivid yellow diamond weighing 5.66 carats, set between near colourless demi-lune diamonds, size 51.

The revised estimate is CHF 220,000 - 295,000 / USD 225,000 - 300,000 Accompanied by GIA report no. 2161014357, stating that the diamond weighing 5.66 carats, measuring 11.29 x 9.37 x 6.07mm, is Fancy Vivid Yellow, Natural Colour, Internally Flawless. Stamped Pt 950 and 750 for platinum and 18 carat gold respectively. For further information on the central diamond, please refer to the GIA report. Demi-lune diamonds weighing a total of approximately 0.90 carat, estimate G - H colour, VS clarity, as gauged and graded in the mounting. No sign of wear to the metal. In like-new condition. Gross weight approximately 7 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."