AN ANTIQUE ONYX AND DIAMOND PENDANT, EARLY 20TH CENTURY in platinum, set with a fancy shaped onyx

AN ANTIQUE ONYX AND DIAMOND PENDANT, EARLY 20TH CENTURY in platinum, set with a fancy shaped onyx with scalloped decoration and an applied foliate motif set with rose cut diamonds, suspending a diamon

VAN CLEEF & ARPELS, AN EXQUISITE ART DECO ONYX AND DIAMOND FOB WATCH PENDANT NECKLACE, EARLY 20TH CENTURY in platinum, the hexagonal face with stylised Arabic numerals, within a border of rose cut

A PAIR OF ANTIQUE ONYX AND DIAMOND DROP EARRINGS, EARLY 20TH CENTURY in yellow gold, of circular design, set with polished black onyx cabochons overlaid with floral motifs, set with rose cut diamonds,

ART DECO DIAMOND, ONYX AND ENAMEL PENDANT, EARLY 20TH CENTURY the pendant of tapering design, set with rose cut diamonds accented by polished pieces of black onyx and bands of black enamel, suspending

Early 20th century French three piece clock set by A.D. Mougin. Mantel clock surmounted with patinated spelter figure and two candelabras, all on shaped Green Onyx bases. 8 day time and strike movemen

A PAIR OF ANTIQUE DIAMOND DROP EARRINGS, EARLY 20TH CENTURY in yellow gold and platinum, each set with a row of three old cut diamonds suspending a cluster of old cut diamonds, stamped 18ct, 2.6cm, 4.

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

ANTIQUE NATURAL PEARL AND DIAMOND RING, EARLY 20TH CENTURY set with a bouton-shaped natural pearl measuring 7.7-8.0 x 6mm, to a band set to the front with circular-cut diamonds, size V1/2 / 10.75, sta

NO RESERVE - AN ANTIQUE GARNET INTAGLIO AND DIAMOND SEAL / SIGNET RING, EARLY 20TH CENTURY in platinum, set with a cushion cut garnet, the table reverse carved in detail to depict a coat of arms, acce

AN ANTIQUE OPAL AND DIAMOND RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with three cabochon opals, accented by round cut diamonds, stamped 18CT & PT, size L / 5.75, 2.7g.

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.

AN ANTIQUE SAPPHIRE AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, set with an oval cut sapphire within a halo of round cut diamonds, stamped 18ct Plat, size N / 6.5, 2

ANTIQUE TURQUOISE AND DIAMOND RING, EARLY 20TH CENTURY claw-set with a cabochon turquoise, within a border of cushion-shaped diamonds, size Q / 8, unmarked, estimated total diamond weight 0.60-0.80 ca

14K YELLOW GOLD, BLACK ONYX AND DIAMOND RING, early 20th century. Oval black onyx panel centers bezel-set early modern brilliant-cut round diamond; pierced shouldersRing size: 3 1/2

AN ANTIQUE AMERICAN RUBY, SAPPHIRE AND DIAMOND BIRD BROOCH / PENDANT, TIFFANY & CO EARLY 20TH CENTURY designed as a flying bird set with round and step cut rubies, French cut sapphires and rose cut di

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

American, early 20th century. Stamped 14K yellow gold by-pass style ring (newer shank), center round platinum plate set with twenty-two (22) mixed cut round diamonds (old mine cut, single cut, etc.).

This is an antique 14K gold pendant necklace dating to the early 20th century. The pendant features a large prong set opal cabochon with vibrant green, blue, and red fire. Accented by three full cut d

An early 20th century European platinum engagement ring set with old mine brilliant cut diamonds with a 0.9ct center. Hallmarked and cast in 90% platinum. Fine Fashionable Natural Precious Stones Jewe

Early 20th Century Platinum and Diamond Bracelet. Openwork design set with seven round diamonds of graduated size, alternating with accent diamonds. Unmarked. Good condition. Approximately 14.4 grams.

Early 20th Century Antique Estate-style Three diamond ring set in platinum. Each diamond approximately .12 CT. size 5.5. some wear from normal use. overall good. total weight: 2.9 grams / 1.8 dwt. Key

A yellow metal, onyx and diamond ring, size O, 3 grams, together with a yellow metal band ring, size M 1/2, a yellow metal mounted double-sided shell cameo pendant, an early to mid 20th century ladies

AN EARLY 20TH CENTURY ONYX AND DIAMONDS CIGARETTE CASE the rectangular polished onyx case of elliptical section with millegrain-set rose-cut diamond border detail and similarly-set scrolling clip clos

A French Art Deco marble clock and garniture setEarly 20th centuryOnyx and marble elements enhanced with verdigris metal deer with diamond clock face and matching urns3 piecesClock: 9" H x 17&quo