A COLOMBIAN 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.

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

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

Georgian Iberian Colombian Emeralds and Old Mine Cut Diamond Brooch Circa: 1700s -1800s Emerald total weight approx. 8.5 ct Diamond total weight approx. 2.10 ct Measurements: 2.5" x 1.75" Total Weight

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

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

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

CARTIER, IMPORTANT CERTIFICATED COLOMBIAN EMERALD & DIAMOND OWL BROOCH, CA. 1950, High carat gold.Vibrant and rich carved emerald of aprpox. 5 ct. (Certificated)Vibrant ruby accents.Diamonds bright an

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

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.

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

A selection of three diamond brooches. To include an early 20th century 15ct gold rose-cut diamond rope-twist and floral bar brooch, an early 20th century single-cut diamond floral spray bar brooch an

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