A PINK TOPAZ, EMERALD AND DIAMOND BROOCH, EARLY 20TH

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

EMERALD AND DIAMOND CORONET BAR BROOCH, EARLY 20TH CENTURY Set with cushion and rose-cut diamonds, and a step-cut emerald, length 4.0cm For further information on this lot please visit Bonhams.com

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.

SPINEL AND DIAMOND BROOCH, EARLY 20TH CENTURY The oval-cut pink spinel within a cushion-shaped diamond surround, length 1.9cm Footnotes: Accompanied by a report from Gem & Pearl Laboratory stating th

18K Gold, Diamond, Emerald, Amethyst and Rose Quartz Brooch, Early-Mid 20th C., carved quartz and amethyst leaves, .15ct diamonds surrounded by 6 round cut emeralds [20] (JTEX8350) {PR} Measurements:

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

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

A selection of jewellery. To include an early 20th century blue paste and split pearl pendant, a diamond single earring, and a coated topaz brooch. Estimated total diamond weight 0.40ct. Diameter of e

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.

A selection of three late 19th to early 20th century 15ct gold gem-set bar brooches. To include a diamond single-stone brooch, a blue topaz and split pearl brooch and a split-pearl heart-shape motif b

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

COLLECTION OF ANTIQUE JEWELLERY, LATE 19TH CENTURY - EARLY 20TH CENTURY 1st: The crescent and star brooch set with pink paste and cushion-shaped diamonds, 2nd: The openwork foliate brooch set with pin

A DIAMOND BROOCH, EARLY 20TH CENTURY in 14ct yellow gold and platinum, the scrolling body set with a fan of rose cut diamonds, accented by further rose cut diamonds and an articulated diamond drop, st

PEARL AND DIAMOND BROOCH, EARLY 20TH CENTURY The openwork lozenge panel set with pearls and old brilliant-cut diamonds, diamonds approx. 1.75cts total, pearls untested, length 5.9cm For further inform

AN EXQUISITE BELLE EPOQUE PINK TOPAZ AND DIAMOND BROOCH in yellow gold and platinum, set to the centre with a cushion cut pink topaz of approximately 7.35 carats, within two concentric borders of old

A BELLE EPOQUE DIAMOND PENDANT / BROOCH, EARLY 20TH CENTURY in yellow gold and platinum, the foliate body suspending swags, jewelled throughout with old European, single and rose cut diamonds, the dia

MARCUS & CO: SAPPHIRE AND DIAMOND BROOCH/PENDANT, EARLY 20TH CENTURY The central oval-cut sapphire within an openwork quatrefoil border of floral and foliate motifs, millegrain-set throughout with old

NO RESERVE - A PERIDOT AND DIAMOND BAR BROOCH, EARLY 20TH CENTURY, Made in 18 carat white gold and platinum, Octagonal step cut peridot, weighing approximately 3.71 carats, Single cut diamonds, Stampe

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

PEARL AND DIAMOND EARRINGS AND BROOCH, EARLY 20TH CENTURY 1st: Each 4.5mm pearl within a cushion-shaped diamond surround, suspended from a row of similarly-cut diamonds, 2nd: The bar brooch set with p

DIAMOND AND PEARL BROOCH, EARLY 20TH CENTURY The openwork bar brooch, set with cushion-shaped and rose-cut diamonds with pearl accents, pearls untested, cushion-shaped diamonds approx. 1.70cts total,

AN EMERALD AND DIAMOND CLUSTER RING, EARLY 20TH CENTURY in yellow and silver, set with a step cut emerald of 1.14 carats, in a border of single cut diamonds, stamped 18CT, size M / 6, 3.6g.

14K YELLOW GOLD EMERALD, DIAMOND & TOPAZ BROOCH 14K yellow gold emerald, diamond, and topaz brooch: One 3.8 x 3.8mm square cut emerald Six 2mm round London blue topaz Six 1.5mm round white diamonds

Edwardian diamond & emerald pendant, early 20th c., hanging pendant set in platinum with yellow gold accents, 20" chain, pendant approx. 2.5"h, 1"w, 9.9 g Provenance: Property from the Collection of a