A collet-set diamond necklace

A Tanzanite and diamond necklace part collet-set with an oval-cut Tanzanite, suspended from a pavé-set diamond panel, to an integral chain, stamped 750 18(Length: 40cm)

Gold, Sapphire and Diamond Necklace 18 kt., 45 collet-set oval sapphires ap. 13.80 cts., 78 collet-set round diamonds ap. 1.50 cts., ap. 25.6 dwts. Length 16 5/8 inches. C The Collection of Dr. Thomas

A DIAMOND LONGCHAIN SAUTOIR NECKLACE in the manner of Tiffany & Co Diamond by the Yard, comprising a single row of collet set diamonds totalling with 11.5-12.5 carats, tests as 18ct white gold, stampe

DIAMOND AND CULTURED PEARL NECKLACE in white gold with one part designed as polished semi-rigid bars and one part as round collet-set diamonds weighing approx. 0.60 ct holding one South Sea Tahitian p

14K white gold sapphire and diamond pendant necklace, art deco revival in style, designed as a flexible multi- tiered pendant with streamlined hinged linear links of collet set sapphires and pave set

Including a 14k yellow gold necklace set with seed pearls measuring 4mm alternating with collet set diamonds (18.0"), a Victorian 14k yellow gold ring topped with seed pearls and emeralds and small ro

Gold, Colored Stone and Diamond Fish Link Necklace 18 kt., round rubies, sapphires and emeralds, 6 collet-set round diamonds ap. .60 ct., small round diamonds ap. 1.30 cts., 17 round emerald eyes, ap.

Tiffany & Co., Elsa Peretti Long Gold and Diamond 'Diamonds by the Yard' Chain Necklace 18 kt., 12 collet-set round diamonds ap. 1.70 cts., signed Tiffany & Co., Peretti, ap. 4 dwts. Length 36 inches.

BUCCELLATI: DIAMOND-SET NECKLACE Of textured openwork rectangular linking, each applied with six collet-set brilliant-cut diamonds, joined by triple bar links, on a concealed clasp, signed Gianmaria

A DIAMOND 'FILET D'OR' PENDANT NECKLACE, BY HERMÈS The bombé plaque suspending three drops with a collet-set brilliant-cut diamond accent, suspending from a cable-link chain necklace, mounte

RUBY AND DIAMOND NECKLACE, LATE 19TH CENTURY Composed of thirteen cushion-shaped ruby and diamond clusters graduating in size towards the centre, alternating with single diamond-set collets, suspendin

A MID 19TH CENTURY CARVED AGATE, DIAMOND AND TURQUOISE NECKLACE/TRIO OF BRACELETS CIRCA 1850The graduated panels carved with various grotesque masks after the antique, with collet set rose cut diamond

Ladies' Italian 14 karat White Gold necklace. Comprised of seven collet set round brilliant cut Diamonds, held on a 16" length baby belcher chain with spring ring clasp. Marked "585". Weighs approx. 3

An 18ct gold diamond and gem-set necklace. Designed as a series of geometric panels, with oval sapphire and ruby cabochon collet detail, to the pave-set diamond highlights. Estimated total diamond wei

14K yellow gold necklace with an antique rose cut diamond set in the original silver collet setting. Dimensions: Length: 18-1/2"LDiamond measures: 8mm x 6.5mm x 2.8mmUnmarked tested 14K (setting teste

A DIAMOND NECKLACE, the fine trace-link chain interspersed with brilliant-cut diamonds within collet-setting, suspending an openwork pendant set with old European and single-cut diamonds throughout, c

A Belle Epoque style diamond necklace, the principle old brilliant cut diamond in collet mount suspended form a graduated rose diamond set drop and lattice work centrepiece set with mixed old cut diam

Platinum Set with twelve round full-cut diamonds totaling 1.45cts. and graded H-I color and SI-I clarity 19.0" L 5.5 grams

Circa 1920, platinum Set with eight old mine and old European-cut diamonds totaling approximately 0.80 ct. and graded H-J color, VS-SI clarity 26 1/2" L 8.0 grams

This Classic 18kt White Gold Necklace features a 7.5mm Grey Pearl highlighted by an approx. 0.08CT Bezel Set Round Diamond Pendant hung on an 18" Chain Necklace. This necklace weighs approx. 3.10 Gram

19 bezel set diamonds approx .5 carat total weight. 17" long. Total weight 8.4 grams.

Vintage Coral, Diamond, and Enamel Ladybug Brooch, Cartierthe ladybug with coral wings and with collet set diamond accents weighing approximately .25 total carat (E-F color, VS clarity) to wings and l

de Grisogono Pair of Blackened White Gold, Amethyst and Diamond Pendant-Earclips 18 kt., round amethysts, 2 round collet-set diamonds ap. .20 ct., signed de Grisogono, ap. 25 dwts. C

A 1950S DIAMOND FOLIATE SPRAY BROOCHWith two curved pierced leaves pavé set with brilliant cut diamonds, to a spray of collet set diamonds with curved diamond set bars between, approximately 5.36