Gem set and diamond necklace, late 19th century

Composed of links set with cushion-shaped and oval stones including hessonite garnet, pink and white sapphire, aquamarine, pink and yellow topaz, yellow zircon, green tourmaline and alexandrite, the pendant with an octagonal hessonite garnet, each within a floral open work border set with rose diamonds and spaced with similar smaller clusters set with circular-cut spinels, length approximately 390mm, pendant detachable, two diamonds deficient.

Clasp tongue with incised number 35406. Principal gemstones from tongue, with approximate measurements and calculated approximate carat weights in brackets: deep orangey brown hessonite garnet (7.1 x 8.4 x 4.3mm, 2.00 carats) bluish-white sapphire (8.1 x 8.0 x 7.1mm, 4.05 carats) pale greenish blue aquamarine (7.3 x 9.9 x 5.7mm, 2.26 carats) brownish-yellow zircon (8.8 x 10.5 x 8.0mm, 7.56 carats) deep orangey brown hessonite garnet (9.2 x 10.3 x 5.3mm, 4.31 carats) pink sapphire (11.4 x 8.9 x 5.4mm, 4.38 carats) yellow zircon (9.0 x 10.3 x 5.5mm, 5.22 carats) pink topaz (8.1 x 11.6 x 5.0mm, 3.67 carats) bright green peridot (9.9 x 7.2 x 5.5mm, 2.87 carats) brown tourmaline (7.9 x 8.1 x 3.8mm, 1.68 carats) green (daylight) to yellowish (incandescent light) alexandrite (8.0 x 6.4 x 5.4mm, approximately 2.06 - 2.27 carats, as tapered cut) pale yellow topaz (13.7 x 8.3 x 4.3mm, 3.47 carats) deep brownish orange hessonite garnet in pendant (15.05 x 11.9 x 4.6mm, 8.03 carats). Spinels bright pinkish red. All stones transparent, with typical inclusions visible under magnification, some visible to naked eye, some surface-reaching. Areas of surface wear and very minor chipping to facet edges to stones consistent with age and wear. Diamonds bright and lively, estimated total diamond weight approximately 7.00 - 10.00 carats. Two diamonds deficient, to yellow zircon cluster and hessonite cluster by clasp tongue. Links well-articulated, clasp secure. Metal with scratches and areas of discolouration consistent with age and wear, some small areas of solder to reverse. Each larger cluster detachable via screw fittings to reverse, pendant detachable via hook fitting. Overall 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.
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."