A VINTAGE DIAMOND BROOCH in platinum, set throughout with old cut diamonds, the diamond totalling

A VINTAGE DIAMOND BROOCH in platinum, set throughout with old cut diamonds, the diamond totalling 2.0-2.2 carats, Portuguese assay marks, 4.0cm, 10.6g. 

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

TIFFANY & CO., A DIAMOND CIRCLE BROOCH, 1940S in platinum, designed as an open circle set throughout with old European cut diamonds, the diamonds all totalling 4.3-4.5 carats, signed Tiffany & Co., no

AN ANTIQUE DIAMOND BROOCH / PENDANT in yellow gold and silver, the openwork body set throughout with old cut diamonds, the diamonds all totalling 4.2-4.6 carats, no assay marks, 4.4cm, 14.6g. 

AN ANTIQUE DIAMOND STAR BROOCH in yellow gold and silver, designed as a five rayed star, set throughout with old cut diamonds, the diamonds all totalling 2.8-3.2 carats, no assay marks, 3.4cm, 7.9g.

AN ANTIQUE DIAMOND FLOWER PENDANT / BROOCH, 19TH CENTURY in yellow gold and silver, set throughout with old cut diamonds, the diamonds all totalling 4.8-5.2 carats, with detachable brooch fitting and

A VINTAGE DIAMOND STAR BROOCH in white gold, designed as a twelve rayed star set throughout with rose cut diamonds, the diamonds all totalling 1.8-2.1 carats, no assay marks, 4.5cm, 11.7g.

A FINE ANTIQUE DIAMOND BROOCH / PENDANT, 19TH CENTURY the oval body of openwork design, set throughout with old cut and rose cut diamonds, the diamonds all totalling 3.6-4.2 carats, with retractable l

AN ART DECO DIAMOND BAR BROOCH, CIRCA 1940 in platinum, set with a row of graduated old cut diamonds accented by rose cut diamonds, all totalling 0.8-0.9 carats, with engraved foliate decoration to th

A VINTAGE DIAMOND BROOCH in 18ct white gold, the scrolling body set with old cut diamonds all totalling 4.4-4.7 carats, later British hallmarks, 4.3cm, 11.9g.

A VINTAGE DIAMOND BROOCH in platinum, designed as a scrolling spray, set with pear and baguette cut diamonds all totalling approximately 5.8-6.2 carats, stamped PT, 5.4cm, 19.3g.

AN ANTIQUE DIAMOND SPRAY BROOCH designed as a floral spray, set throughout with rose cut, single cut and old cut diamonds totalling 4.0-5.0 carats, no assay marks, 6.8cm, 27.7g.

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

A VINTAGE RUBY AND DIAMOND FLOWER BROOCH in yellow gold, designed as a floral spray, set with old and round brilliant cut diamonds accented by round and step cut rubies, the diamonds all totalling 0.5

AN ANTIQUE DIAMOND AND PEARL SWEETHEART BROOCH designed as two hearts set with pearls surmounted by a scrolling ribbon, set throughout with old cut diamonds totalling 1.9-2.1 carats, 4.0cm, 6.2g.

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

DIAMOND EAGLE BROOCH Pavé-set throughout with old brilliant and single-cut diamonds, accented by a circular-cut tsavorite garnet eye, mounted in gold and platinum, diamonds approx. 1.45cts total,

set with 90 table, old mine, and round/pear-shaped rose-cut diamonds, totaling an estimated: 1.00cts; with 14k white gold clip back findings; weighing approximately 9.5 grams; each measures: 1 x 3/4in

A VINTAGE GEMSTONE SET BIRD AND FLOWER BROOCH / PENDANT in yellow and white gold, designed as a flower-filled vase with a bird perched on a leaf, set throughout with round cut diamonds totalling 0.5-0

Old European cut diamonds set in platinum filigree with gold pin back. Approximately 1.5 carat center stone with .75 carat side stones as well as many small diamonds throughout. Dimensions: L 2.75" x

Beautiful French openwork platinum brooch set with 4 white pearls with pink overtones, and diamond accents throughout - in both Old European and rose cuts. Stamped with the French domestic platinum ma

CARTIER, IMPORTANT ART-DECO ROCK CRYSTAL AND DIAMOND BROOCH, set with 5 larger old cut diamonds and smaller diamonds totalling approx. 4.70 ct. The 2 sides set with carved rock crystal in trapezium sh

A DIAMOND FLOWER BROOCH, set throughout with old brilliant, cushion and single-cut diamonds, diamonds approximately 4.00cts total, length 7.3cm

ANTIQUE NATURAL PEARL AND DIAMOND BOW BROOCH set with old cut diamonds totalling approximately 3.54 carats and suspending a pearl drop of 9.1mm, 4cm, 9.7g. Gemological report: Natural, saltwater origi