Ruby and diamond brooch and pair of ruby and diamond earrings

The circular plaque brooch millegrain-set with circular- and calibré-cut rubies and rose diamonds, circa 1915; together with a pair of later earrings of similar design, set with circular-cut rubies and baguette diamonds, post and butterfly fittings, unsigned, possibly by John Donald.

Rubies in brooch medium red, rubies in earring light purplish red, typical inclusions visible to naked eye and under magnification. Diamonds bright and lively. One earring with post fitting bent, could benefit from attention by a professional jeweller. Brooch with scratches and visible discolouration typical with age and wear, brooch fitting possibly replaced. 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 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."