An Art Deco diamond brooch, set with old cut and single cut diamonds in a geometric design, with a

LACLOCHE FRÈRES: ART DECO DIAMOND-SET BROOCH, CIRCA 1925 The onyx plaque, applied with a giardinetto motif set with carnelian cabochons, old single-cut and rose-cut diamonds, the geometric border

ART DECO SAPPHIRE AND DIAMOND BROOCH, CIRCA 1925 The openwork geometric plaque millegrain-set throughout with old brilliant and single-cut diamonds, accented by circular-cut sapphires, diamonds approx

AN ART DECO DIAMOND LADIES COCKTAIL WATCH in platinum, the circular dial within a diamond set bezel, the bracelet of geometric design further set with old cut and single cut diamonds, the diamonds all

A FINE ART DECO CORAL, DIAMOND AND ONYX BROOCH in 14ct yellow gold, set with a sugarloaf cabochon coral against a pierced geometric ground, accented by old and single cut diamonds and polished onyx ba

ART DECO JADE AND DIAMOND EARRINGS, BROOCH AND RING, CIRCA 1920 1st: Each earring with an openwork surmount of geometric design, set with single-cut diamonds, suspending a jadeite jade plaque carved t

ART DECO DIAMOND BROOCH, CIRCA 1930 Of openwork, geometric design, set with old brilliant-cut diamonds, diamonds approx. 2.70cts total, length 4.4cm

ART DECO SAPPHIRE AND DIAMOND BRACELET, CIRCA 1925 The articulated strap of openwork geometric design, set with step-cut sapphires and old brilliant, single and baguette-cut diamonds, diamonds approx

Art Deco Platinum and Diamond Bar Broochthe shaped bar brooch set with old European and single cut round diamonds weighing approximately 1.33 total carats (H-I color, VS-SI clarity) and with synthetic

Centering a round cabochon turquoise in a pierced millegrain platinum motif, set throughout with old full and single cut diamonds with calibré cut gemstone flowers and turquoise detailing; total diam

AN ART DECO ONYX AND DIAMOND BAR BROOCH, CIRCA 1925 Set with two tapering onyx cabochons within a pierced surround set with old brilliant and single-cut diamonds, millegrain detailing throughout, moun

CARTIER: ART DECO DIAMOND-SET WRISTWATCH, CIRCA 1925 The rectangular dial with Roman chapters, the bezel set with old single-cut diamonds, between pear-shaped diamonds and similarly-set geometric open

KOCH: ART DECO SAPPHIRE AND DIAMOND GIARDINETTO BROOCH, CIRCA 1920 The pierced vase millegrain set with old brilliant, single and rose-cut diamonds, issuing similarly-set leaves and carved sapphire fl

ART DECO ROCK CRYSTAL, ENAMEL AND DIAMOND BROOCH, CIRCA 1925 Of geometric design, the openwork square rock crystal plaque accented by black enamel bands and single-cut diamonds, between pierced, simil

ART DECO EMERALD AND DIAMOND BRACELET, CIRCA 1925 Of geometric design, set with brilliant and single-cut diamonds and emerald cabochons, diamonds approx. 6.00cts total, length 18.0cm, cased

An Art Deco diamond and platinum brooch circa 1930 designed as a dimensional ribbon bow set with single and old mine-cut diamonds, suspending articulated step-cut diamond fringe, terminating in old mi

ART DECO DIAMOND BRACELET, CIRCA 1930 Of openwork geometric design, set throughout with pear-shaped and brilliant and single-cut diamonds, diamonds approx. 6.15cts total, length 18.3cm, fitted case

Platinum circle brooch with bow, set throughout with single and old mine-cut diamonds totalilng approximately 2.00 cts., graded G-H color and SI clarity, 7.5 gms gross, est: $600/800

Antique Art Deco era pearl bracelet and earring set. Features a wonderful 14k white gold shell design clasp set with a half carat old mine cut diamond. Surrounded by single cut diamonds. Contains thre

BOUCHERON, AN EXCEPTIONAL ANTIQUE ART DECO DIAMOND AND ENAMEL BROOCH in platinum and 18ct white gold, the geometric body set with old cut diamonds within two octagonal borders of black enamel, the pri

ILLARIO FOR BULGARI: DIAMOND BANGLE/TRIPLE-CLIP BROOCH, CIRCA 1935 Of geometric and scroll design, set throughout with old brilliant and single-cut diamonds with baguette-cut diamond accents, the cent

A Ladies Art Deco 14K Gold and Diamond Ring A 14K yellow gold Art Deco ladies ring circa 1920, crafted from textured gold in a geometric design, and set with old European-cut diamonds. Diamonds are ne

AN ART DECO PLATINUM, EMERALD, AND DIAMOND BROOCH Centering an emerald-cut emerald measuring approximately 9.25 x 5.90 x 2.80 mm, and set with old European, old mine, single, and baguette-cut diamonds

Art Deco 18K white gold bar pin features an inlaid central onyx bow design accented with approximately .25ct Collette set old European cut diamond. Complemented on sides by small bead set single cut d

Art Deco Platinum Topped Gold, Pearl, and Diamond Braceletthe center element in a geometric motif set with three cultured pearls (2.9mm to 3.8mm) and set with old European and single cut round diamond