A DIAMOND PLAQUE BROOCH the openwork geometric plaque brooch set with five principal old cut diam...

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 ANTIQUE DIAMOND PLAQUE BROOCH in rectangular design, set to the centre with an old cut diamond of 0.35 carats, the openwork body set with further old cut diamonds, the diamonds all totalling 2.8-3.

A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set throughout with old cut diamonds, the diamonds totalling 3.0-3.5 carats, stamped 18ct and PL, 4.6cm, 7

Platinum and Diamond Brooch The openwork plaque of scrolled pierced ribbons centering one old European-cut diamond ap. .85 ct., flanked by 6 baguette diamonds and clusters of 18 collet-set old-mine an

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 DIAMOND BROOCH/CLASP, CIRCA 1935, AND TRIPLE ROW CULTURED PEARL NECKLACE The openwork geometric plaque set throughout with cushion-shaped and old brilliant diamonds, with step and baguette-cu

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

DIAMOND DOUBLE-CLIP/BROOCH, CIRCA 1940 Of openwork geometric form with scrolling detail, set throughout with old brilliant and single-cut diamonds, accented by baguette-cut diamonds and two collet-set

A 29th century 14k gold brooch. With an enamel plaque set with diamonds (old cut). Dimensions: 3X2 cm, total weight: 8.2 grams. Unmarked, tested gold.

DIAMOND PLAQUE PENDANT/BROOCH, MID 19TH CENTURY Of openwork foliate design, set throughout with cushion-shaped diamonds, principal diamond approx. 0.90ct, remaining diamonds approx. 4.40cts total, la

Antique cut diamond plate brooch in platinum. Brooch made of platinum set with rose cut diamonds in openwork motifs and three illusion claw centers with three antique cushion cut diamonds of approx. 0

10 Karat Gold, Diamond, & Sapphire Brooch The openwork plaque of oblong shape and geometric design is set with round brilliant diamonds weighing a total of 0.32 carats and round blue sapphires weighin

AQUAMARINE AND DIAMOND BROOCH, CIRCA 1950 The octagonal-cut aquamarine within an openwork geometric frame set with single, old brilliant and baguette-cut diamonds, length 3.7cm For further informatio

Art Deco style openwork brooch in 18 kt white gold. of intertwined geometric lines set with diamonds, old cut, set in grain with an estimated weight of 6.50 ct. and center with diamond bezel, brillian

NATURAL PEARL AND DIAMOND BROOCH, LATE 19TH CENTURY Of openwork plaque design, set with an 8.6 x 9.1 x 6.5mm natural button pearl, cushion and rose-cut diamonds and pearls, diamonds approx. 1.80cts to

Antique Gold, Bloodstone, and Diamond Brooch, Russiaset with a round bloodstone plaque centering on bezel set old rose cut diamonds weighing approximately .20 total carat (K-L color, SI-I clarity), wi

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

IMPORTANT 19th CENTURY MALTESE CROSS DIAMOND PENDANT/BROOCH, of openwork design, set with old cut diamonds totalling approx. 13 ct. The central diamond weighing 1.61 ct. L. 7 cm. 16 grams. With a fitt

DIAMOND NECKLACE The openwork plaque set with brilliant, old brilliant, and step-cut diamonds, diamonds approx. 1.95cts, lengths: pendant 4.9cm, chain 47.1cm For further information on this lot please

A SAPPHIRE AND DIAMOND BROOCH The openwork brooch set with a central circular-cut sapphire, within a surround of old brilliant-cut diamonds in square millegrained settings, further issuing curved rows

containing two old European cut diamonds [H-I/I] weighing approximately 0.55 carats total; 120 old European cut diamonds [I-J/SI] weighing approximately 5.90 carats total; and 18 baguette cut diamonds

Art deco brooch set with five Old European cut diamonds. Center approximately .20 carat and four approximately .03 carat each, .42 CTW. Clarity SI2, Color H-I. 1-7/8" x 5/8". 3.0 dwt. IMPORTANT: Befor

A SAPPHIRE AND DIAMOND DRESS RING The elongated openwork plaque, centred by a collet-set old brilliant-cut diamond, accented by similarly-cut diamonds and marquise-shaped sapphires, to a polished hoop