Platinum and Diamond 'Quatre Plans' Ring, René Boivin

Centering an old European-cut diamond weighing approximately .55 carat, accented by smaller old European-cut diamonds weighing approximately .50 carat, size 6, with French assay and maker's mark; circa 1934-1935.

In good condition. The center diamond is approximately H-I color, I clarity due to a large cavity on the pavilion. The accenting diamonds are approximately G-I color, VS-SI clarity.The shank with some gentle scratching. The maker's mark and assay marks are on the exterior of the shank so sizing must be done carefully.
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.

Accompanied by a Certificate of Authenticity from Françoise Cailles.