Emerald, ruby and diamond brooch, late 19th century

Of ribbon bow design, the centre set with a step-cut emerald within a border of cushion-shaped and rose diamonds, surrounded by similarly set ribbon motifs, suspending a detachable emerald drop, encircled by a serpent set with rose diamonds and cabochon ruby eyes, French assay marks, later fitted case.  

Rubies of Burmese origin cannot be imported into the US; this piece may contain a ruby of Burmese origin and therefore may not be able to be imported into the US. Certification of non-Burmese origin is required before the import of rubies into the US. Please see our Important Notices and contact the jewellery department for further information. French assay marks for 18 carat gold. Estimated total diamond weight approximately 7.00 - 10.00 carats, estimated colour K-M, estimated clarity SI on average. Emeralds medium green, good saturation, with typical inclusions visible to naked eye, some with surface reaching fissures. One rose diamond deficient to serpent motif on detachable drop. Scratches and some tarnish to metal reverse consistent with age and wear. In good condition. Accompanied by later fitted case.
"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."