A diamond brooch. Of openwork design, the old-cut

An early 20th century 15ct gold ruby and diamond bar brooch. Of openwork design, the old-cut diamond and circular-shape ruby collet line, with shared halo surrounds and old-cut diamond collet accent t

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

A diamond and enamel brooch. Of openwork design, the old-cut diamond, with scrolling tapered sides and blue enamel accent. Length 5.9cms. Weight 4.1gms.

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 BROOCH Of openwork scrolling design, set with old brilliant and rose-cut diamonds, length 5.7cm

A diamond, pearl and seed pearl brooch. Of openwork design, the old-cut diamond and pearl scrolling foliate cluster, suspended from a similarly-set stylised bow. Estimated total diamond weight 1.15cts

AQUAMARINE AND DIAMOND BROOCH Of openwork design, set with two pear-shaped aquamarines and old brilliant-cut diamonds, length 4.2cm For further information on this lot please visit Bonhams.com

A mid Victorian silver and gold diamond set brooch mount. Of openwork design, comprising vari-size old and rose-cut diamond spray leaves. Estimated total diamond weight 1.10 to 1.50cts. Length 6.5cms.

A late Victorian turquoise and diamond brooch. Of openwork design, the circular turquoise cabochon, suspended from an old-cut diamond and turquoise cluster, with similarly-set foliate sides. Estimated

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

Includes a 14kt yellow gold brooch with openwork design set throughout with Old European cut diamonds and pearls - (6) pearls measuring approx. 3mm each, (6) pearls measuring approx. 4mm each, (6) dia

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

IMPORTANT ANTIQUE NATURAL PEARL AND DIAMOND BROOCH, The brooch of openwork scrolling and guirland design, set with a central natural button shaped pearl of 15.72 ct. further set with 4 larger old cut

Antique Gold and Diamond Crescent Broochthe crescent brooch in an open work scalloped design set with old European and mine cut diamonds, completed with a single pin stem with safety catch, testing 14

EMERALD AND DIAMOND DOUBLE-CLIP/BROOCH, CIRCA 1935 Of openwork scrolling spray design, each set with a circular-cut emerald, the scrolls pavé-set throughout with old brilliant-cut diamonds, accen

DIAMOND BROOCH Of garland design, the openwork ribbon and floral swag set with brilliant, old brilliant and single-cut diamonds, suspending articulated knifewire pendants, terminating with brilliant-c

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.

AN ANTIQUE DIAMOND BROOCH in scrolling design, set with old cut and rose cut diamonds suspending an old European cut diamond, the diamonds all totalling 3.8 - 4.2 carats, no assay marks, 5.2cm, 12.5g.

A diamond pendant. Of openwork design, the old and rose-cut diamond scrolling motif, with similarly-cut diamond drop, suspended from a fancy-link chain. Length 47cms. Weight 4.2gms.

ROSE CUT DIAMOND BROOCH, of part openwork entwined design. set with rose cut diamonds totalling approx. 1.50 ct. W. 5.3 cm. 8.5 grams.

A diamond and ruby floral brooch. Of openwork design, the rose-cut diamond and circular-shape ruby cluster, within a similarly-set floral surround and rope-twist circular border. Diameter 3cms. Total

IMPORTANT DIAMOND CLIP BROOCH, of stylized elongated triangular design. Set with old cut diamonds, accentuated with rose cut diamonds, totalling approx. 6.20 ct. L. 3.9 cm. W. 2.3 cm. 16.2 grams. With

DIAMOND-SET BROOCH Of scrolling design, set with old brilliant and single-cut diamonds, diamonds approx. 5.00cts total, length 5.0cm

SAPPHIRE AND DIAMOND BROOCH Of openwork design, centrally-set with a cabochon sapphire, between oval and single-cut diamonds, set throughout with rose-cut diamonds, oval and single-cut diamonds approx