An early 20th century emerald and diamond brooch. The

An early 20th century emerald and diamond brooch. The cylindrical emerald drop, with rose-cut diamond cap, suspended from a similarly-set floral cluster. Length 3.8cms. Weight 6.9gms.

An antique (ca early/mid 20th century) 14K yellow (rose-ish coloring) gold brooch, with pin back, featuring an oval emerald approx 7.5mm x 7mm, and with channel set and prong set old mine-cut diamond

AN ART DECO RUBY, EMERALD, SAPPHIRE AND DIAMOND PIN BROOCH, EARLY 20TH CENTURY, POSSIBLY BY CARTIER in 18ct white gold, the pin terminated by concentric circular motifs articulated to rotate within on

Two early 20th century diamond and gem-set brooches. To include an alternating square-shape emerald and old-cut diamond line brooch, together with a Martin Mayer green paste circle brooch. One with ma

AN EARLY 20TH CENTURY NOVELTY EQUESTRIAN CROP BROOCH with a calibré-cut emerald and diamond handle. 1cm by 4.5cm, 3.6 grams Good condition.

Italy, early 20th century. Stamped 'K.18 ITALY' yellow gold brooch designed as a serpent, set with rose cut diamonds and emeralds. Total diamond weight approx. 1.10cts. Emeralds set in the head and ta

An early 20th century diamond brooch. The old-cut diamond, within a similarly-cut diamond ribbon surround, suspending an old-cut diamond two-stone drop. Estimated total diamond weight 0.75ct. Length 3

AN EARLY 20TH CENTURY EMERALD AND DIAMOND NÉGLIGÉE PENDANT NECKLACE two old pear-cut diamonds within borders of calibré-cut emeralds, suspended from trace chains to a rose-cut diamond h

An early 20th-century diamond bar brooch millegrain-set with two round brilliant-cut diamonds, rose-cut diamond detail, unmarked(Length: 6.5cm)

An early 20th century diamond foliate brooch. Of circular outline, the openwork scrolling panel, set throughout with rose and old-cut diamonds. Estimated old-cut diamond total weight 0.20ct. Diameter

An early 20th century diamond bar brooch. The old-cut diamond floral cluster, with knife-edge bar sides and similarly-cut diamond collet terminals. Estimated total diamond weight 0.70ct. Length 5cms.

An early 20th century gold diamond brooch. Designed as an old-cut diamond cockerel, atop a bar. One diamond deficient. Estimated total diamond weight 0.15ct. Length 3.9cms. Weight 2.9gms.

AN EARLY 20TH CENTURY OPAL AND DIAMOND BROOCH / PENDANT a cluster of heart-cut opals within an openwork frame of further opals and eight-cut diamonds. Estimated total diamond weight 0.40ct, 4cm by 2.5

AN EARLY 20TH CENTURY DIAMOND SETTER DOG BROOCH realistically modelled with textured fur, with a black enamel collar set with an old-cut diamond. Pin marked '18', 2.2cm by 4.8cm, 8.5 grams The brooch

AN EARLY 20TH CENTURY SAPPHIRE AND DIAMOND BROOCH an oval-cut sapphire spaced by old-cut diamonds and oval-cut sapphires milgrain-set within a pierced wing frame. Estimated total diamond weight 0.30ct

An early 20th century ruby and diamond brooch. Length 4cms. Total weight 5.9gms.

An early 20th century sapphire and diamond brooch. The kite-shape sapphire, with single-cut diamond surround, similarly-cut diamond line sides and old-cut diamond terminals. Estimated total diamond we

AN EARLY 20TH CENTURY DIAMOND CLUSTER BAR BROOCH, a milgrain cluster of round-cut diamonds, to a split bar. Estimated total diamond weight 0.50ct, indistinctly marked '15CT', 1cm by 5.7cm, 3.6 grams

Early 20th century silver butterfly brooch (2.75"x1.2"), center an European cut diamond, wt. approx. 0.40ct, accented by approx. 110 rose cut diamonds, tdw approx. 3.0ct

A LATE 18TH/EARLY 19TH CENTURY EMERALD AND DIAMOND BROOCH, a round cabochon emerald within a stylised scrolling frame, set throughout with rose-cut and single-cut diamonds. Measures 3.6cm in diameter

A late 19th / early 20th century diamond 'Halley's Comet' brooch, the tapered mount set to one end with a cluster of three old-cut diamonds, and a row of seven graduated mixed rose-cut diamonds, set i

A MID 20TH CENTURY SAPPHIRE, EMERALD AND DIAMOND CORNFLOWER BROOCHThe flower head with illusion set calibré cut sapphire petals, with central channel set step cut emerald fronds and rose cut diam

AN EARLY 20TH CENTURY PEARL AND DIAMOND PENDANT / BROOCH a pearl within an openwork diamond and seed pearl-set clover leaf frame. Estimated total diamond weight 0.90ct, 3.2cm diameter, 8.8 grams One

An early 20th century 18ct gold emerald and diamond ring. The cushion cut emerald and diamond in bezel setting with openwork gallery, raised shoulders and tapered shank. The diamond estimated weight 0