Important diamond ring, Van Cleef & Arpels

Set with a step-cut diamond weighing 21.60 carats, between tapered baguette diamonds, size 52, signed Van Cleef & Arpels, numbered, French assay and maker's marks. 

Accompanied by GIA report no. 5181179788, stating that the step-cut diamond weighing 21.60 carats and measuring 16.61 x 14.75 x 10.19mm, is D Colour, VVS1 Clarity, together with a working diagram stating that the diamond may be internally flawless after minor repolishing, and a type IIa classification letter. Signed VAN CLEEF & ARPELS, numbered SA 123.928. French maker's mark. French assay mark and stamped Pt 950 for platinum. For further details on the central diamond, please refer to the GIA report. Side diamonds bright and lively. Signs of normal wear to the metal. In very good 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.
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."