Platinum, Ruby and Diamond Ring

Invisibly-set with calibré-cut rubies, set diagonally with round diamonds, size 7¼, maker's mark, three rubies missing.

As noted in the catalogue, there are 2 (possibly 3) rubies missing from the same row bordering one of the shoulders. The rubies are deep slightly purplish red and well-matched; several examples chipped. The diamonds are approximately G-H color, VS clarity. Maker's mark R M bisected by a fly within a lozenge, possibly French. There is another, unidentified mark. The mounting is in good overall condition with light nicking throughout commensurate with regular wear and evidence of sizing.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. 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. Illustrations in the catalogue may not be actual size. Prospective purchasers are reminded that, unless the catalogue description specifically states that a stone is natural, we have assumed that some form of treatment may have been used and that such treatment may not be permanent. Our presale estimates reflect this assumption.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.