Sapphire and diamond pendent necklace, circa 1910, composite

The pendant with an oval cabochon sapphire, weighing 33.45 carats, framed by rose-, circular- and cushion-shaped diamonds and calibré-cut sapphires, circa 1910, to a necklace set at the front with single- and brilliant-cut diamonds, mounted in platinum, length approximately 385mm.

Please note that the sapphire is accompanied by Gübelin report no. 0502004 stating that the sapphire, weighing 33.45 carats, shows no indications of heating. The necklace is stamped 750 for gold. Solder marks at the front. The pendant, dated circa 1910, with two screw threads at the back, the central sapphire is a later addition. One prong holding the sapphire is made in yellow gold, the other three prongs are made in a white metal. Typical crystal inclusions. For further information please refer to the Gübelin report. The four larger circular-cut diamonds gauged to weigh approximately 0.75 carat each, H-I colour, SI clarity. Signs of wear to the metal, scratches commensurate with age and 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 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."