A diamond and gem-set brooch. Of openwork design, the

A diamond and gem-set brooch. Of openwork design, the foil-back emerald and green paste quatrefoil, within a diamond and paste replacement scrolling surround. Estimated total diamond weight 1ct. Lengt

An early 19th century gold enamel and gem-set brooch. Of openwork design, the later added cushion-shape lapis lazuli panel and floral surround, to the enamel flower, ruby and opal scrolling foliate bo

A 9ct gold gem-set brooch. Of openwork design, the oval opal cabochon, with a split pearl scrolling surround, to the circular-shape sapphire chevron sides. Hallmarks for London, 1988. Length 3.7cms. W

Two gem-set brooches. Both of openwork design, to include a 9ct gold garnet and split pearl brooch, together with a foil-back garnet floral brooch. One with hallmarks for 9ct gold. Lengths 2.7 and 2.8

A gem-set peacock brooch. Of openwork design, the split pearl body, with ruby eye detail and circular-shape emerald crest, to the circular-shape ruby and split pearl feathers. Length 3.8cms. May also

DIAMOND-SET BROOCH, CIRCA 1890 Of openwork design, set with cushion-shaped diamonds, diamonds approx. 3.35cts total, length 3.6cm 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.

DIAMOND-SET PENDANT/BROOCH, 19TH CENTURY Of openwork design, set throughout with cushion-shaped diamonds in pinched-collet settings, diamonds approx. 2.40cts total, detachable brooch fitting, length 3

A pair of 18ct gold diamond and gem-set earrings. Each of openwork design, the oval-shape sapphire, with calibre-cut ruby chevron and brilliant-cut diamond geometric surround. Estimated total diamond

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

Two 9ct gold gem-set brooches. The first, a bar brooch designed as an oval-shape garnet collet with openwork surround and split pearl accents, the second, of openwork design set throughout with split

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

VICTORIAN DIAMOND DOUBLE HEART BROOCH, The brooch of openwork design, with op diamond set hearts with diamonds to the center. Diamonds totalling approx. 1.20 ct.

An 18ct gold diamond and gem-set brooch. Designed as a giardinetti, with brilliant-cut diamond openwork basket and marquise-shape ruby, sapphire and emerald flowers. Estimated total diamond weight 0.2

An early 20th century Egyptian Revival gold, diamond and gem-set brooch. The carved moonstone scarab with ruby and rose-cut diamond surround, to the rose-cut diamond accent openwork wing sides. Austri

A 1950's 18ct gold diamond and gem-set bird brooch. The bird, comprising textured feathers with openwork breast, emerald eye and ruby and turquoise tail feathers, resting on a diamond accent branch. M

A GEM-SET AND DIAMOND PENDANT ON CHAIN Of openwork design set with multiple pear-shaped peridot, citrine, pink tourmaline and amethyst drops, embellished with concaved rows pavé-set with brillian

Two fourteen karat white gold, diamond, and gem-set broochesone oval shaped set with circular-cut diamonds in an openwork foliate design, further set with cultured pearls measuring approximately 8.0mm

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

IMPORTANT AND MAGNIFICANT EMERALD AND DIAMOND BROOCH, set to the center with an important octagonal cut 8.13 ct. emerald, Colombian origin. The Diamond shaped brooch further of part openwork design, s

ANTIQUE DIAMOND DROP BROOCH AND PAIR OF DIAMOND CHANDELIER DROP EARRINGS. The brooch of openwork floral design, set with diamonds and suspending a larger diamond drop. The earrings with a diamond tref

EDWARDIAN CERTIFICATED NATURAL PEARL AND DIAMOND BROOCH, of openwork scrolling design. Set with diamonds totalling appro. 3.80 ct. Accentuated with 3 natural pearls to the top and suspending a natural

VICTORIAN PEARL AND DIAMOND DROP PENDANT/BROOCH, of openwork scrolling design, set with diamonds totalling approx. 2.15 ct. Flanked with 2 pearls. Removable brooch fitting and flip back bail. L. 6.2 c

DIAMOND BROOCH Of openwork spray design set with brilliant, pear, marquise and baguette-cut diamonds, diamonds approx. 5.35cts total, length 4.3cm Footnotes: Please note this lot has VAT at the prevai