Diamond ring and a sapphire and diamond necklace

The ring composed of a triangular and an oval motif pavé-set with diamonds, size 52^1/2, the necklace designed as a line of brilliant-cut diamonds, the front highlighted with three oval sapphires, the center supporting a marquise-shaped diamonds, length approximately 400mm.

Necklace stamped 750 for 18 carat gold, inscribed WJ and 6.44CT, referring to the stated total carat weight of the diamonds. Sapphires well matched in colour, blue of medium strong saturation. Diamonds bright and lively, on average G-H colour, few I, VS-SI clarity, as gauged and graded in the mount. Signs of light wear to the metal. Clasp secure, safety catch. In very good condition. Gross weight approximately 16 grams. Ring signed ATC, stamped 950 Pt for platinum. Diamonds bright and lively, stated to weigh a total of 1.55 carats. Signs of wear to the metal. In good condition. Gross weight approximately 20 grams.
"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.
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."