Diamond ring, early 20th century

Set with a circular-cut diamond weighing 5.49 carats, between millegrain-set shoulders enhanced with single-cut diamonds, size 49, adjustable, French assay mark.

French assay mark for platinum. Numbered 71288. In our expert opinion, the diamond is of light pink tint, SI1 clarity. Size 49 - 52, band with a slider at the back allowing shank to be extended. Signs of normal wear to the metal consistent with age and use. One rivet missing below the gallery but does effect durability of the band. In good condition. Total gross weight approximately 3 grams. The GIA was unable to establish whether the colour is of natural origin or not.
"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."