An early 20th century platinum and gold diamond dress

An early 20th century platinum and 18ct gold diamond dress ring. The three graduated circular-cut diamonds, within a single-cut diamond scalloped millegrain border. Estimated total diamond weight 0.20

An early 20th century platinum and 18ct gold coral and diamond dress ring. The replacement oval-shape coral cabochon, within a rose-cut diamond openwork panel surround, to the similarly-set diamond sh

An early to mid 20th century platinum and 18ct gold old-cut diamond floral dress ring.Estimated total diamond weight 1.20cts, H-I colour, SI1-P1 clarity.Ring size O1/2. 3.3gms.

A set of early 20th century 18ct gold and platinum mother-of-pearl and diamond dress studs. Each designed as an old-cut diamond collet, within a mother-of-pearl surround with engraved border. Estimate

A FINE ANTIQUE DIAMOND DRESS RING, EARLY 20TH CENTURY in yellow gold and platinum, the scrolling face set with old cut diamonds accented by rose cut diamonds, no assay marks, size J / 4.5, 3.6g.

A SOLITAIRE DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an old cut diamond of 0.51 carats within a tapering band, stamped 18ct Plat, size K / 5.25, 2.4g.

AN ART DECO RUBY AND DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, the rectangular face set with a step cut ruby accented by single cut diamonds, stamped 18ct Plat, size M /

An early 20th century platinum and gold, old and rose-cut diamond ring.Estimated total diamond weight 0.75ct. Ring size P. 5.3gms.

An early 20th century platinum and gold diamond pendant. Of circular outline, the pave-set diamond monogram reading the letters A and M, suspended from a loop surmount. Estimated total diamond weight

An early 20th century 18ct gold diamond dress ring. The old-cut diamond quatrefoil, with rose-cut diamond centre and sides. Estimated total old-cut diamond weight 0.70ct, I-J colour, SI clarity. Ring

An early 20th century platinum and 9ct gold diamond cocktail watch. The silvered dial, with vari-cut diamond bezel and geometric lugs, to the later 9ct gold adjustable mesh strap. Estimated total diam

An early 20th century 9ct gold diamond and garnet dress ring. The old-cut diamond star, and circular garnet cabochon, within a rope-twist surround, to the later plain band. Estimated diamond weight 0.

Two early 20th century 18ct gold diamond and sapphire dress rings. To include a graduated oval-shape sapphire three-stone ring with diamond point double spacers, together with an alternating circular-

An early 20th century platinum and gold, turquoise and old-cut diamond cluster brooch.Turquoise estimated dimensions of 17.6 by 16 by 8.5mms.Estimated total diamond weight 3.90cts, G-I colour, SI1-P1

An early 20th century platinum and 9ct gold blue zircon and single-cut diamond cluster ring.Zircon calculated weight 1.96cts, based on estimated dimensions of 6.85 by 4.5mms.Estimated total diamond we

This is a superbly crafted ladies ring dating to the Edwardian era of the early 20th century. Rendered in fine 18K rose gold, the ring features Old European cut diamonds set in platinum. Accented with

A FINE ART DECO CEYLON NO HEAT SAPPHIRE, DIAMOND AND PEARL NECKLACE, EARLY 20TH CENTURY in platinum and yellow gold, set throughout with nine oval cut blue sapphires all totalling approximately 16.90

A DIAMOND AND ENAMEL BROOCH, EARLY 20TH CENTURY in platinum and yellow gold, the oval body of openwork design, set with a central old cut diamond between panels of blue guilloche enamel, accented by f

A SAPPHIRE AND DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold, set with a trio of graduated cushion cut blue sapphires, accented by pairs of old cut diamonds, stamped 18ct, size O / 7.25,

Victorian/Edwardian platinum and multicolor 14K gold, diamond and cultured pearl brooch. Stamped, "B14K". 11.7 grams. 1.875"L, Circa - Late 19th - Early 20th C. PROVENANCE: James Robinson, New York. F

A pair of early 20th century 18ct gold and platinum lapis lazuli and diamond cufflinks. Each designed as two octagonal-shape lapis lazuli and rose-cut diamond cluster panels, to the connecting link. L

Central OEC diamond, .72 ct. by formula, framed by diamond halo in platinum head, surrounding diamonds, approx. .70 ct. TW, on yellow gold hoop. Early 20th c. Unmarked. At least 14k yg. Size 6. 2.0 dw

AN ANTIQUE AMETHYST, PERIDOT AND DIAMOND SUFFRAGETTE DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold, set with a trio of graduated round cut amethyst and peridot, punctuated by rose cut diamonds, t

Edwardian diamond & emerald pendant, early 20th c., hanging pendant set in platinum with yellow gold accents, 20" chain, pendant approx. 2.5"h, 1"w, 9.9 g Provenance: Property from the Collection of a