Gem set ring, 'Coco', Chanel

Set with a cushion-shaped citrine, buff top peridots and iolites, size L, signed Chanel, numbered, French assay and maker's marks. 

French assay mark for 18 carat gold and maker's mark B A to exterior of shank. Signed Chanel, numbered IF 212 and marked 750 for 18 carat gold to interior of the shank. Citrine orange in hue, transparent, with typical minor inclusions visible under magnification, measuring approximately 11.8 x 11.8 x 6.9mm, estimated to weigh approximately 5.16 carats. Peridots light green, iolites mid violet-blue, both transparent, also with minor typical inclusions visible under magnification. Front of ring measuring approximately 23 x 22mm. Scratches to metal and stone surfaces consistent with wear. 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.
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."