A SAPPHIRE AND DIAMOND BAR BROOCH in platinum, set to the centre with a round cut sapphire of

AN ART DECO SAPPHIRE AND DIAMOND BAR BROOCH in yellow gold and platinum, the tapering bar set with a floral cluster of diamonds to the centre, flanked by rows of graduated cushion cut blue sapphires,

ANTIQUE 4.50 CARAT SAPPHIRE AND DIAMOND BAR BROOCH in gold, set with round cut sapphires totalling approximately 4.50 carats and alternating rose cut diamonds, unmarked, 8.6cm, 10g.

A VINTAGE SAPPHIRE AND DIAMOND BAR BROOCH in 14ct yellow gold, in scrolling form set with a row of alternating round cut sapphires and old cut diamonds, stamped 14, 4.0cm, 4.5g. 

AN ART DECO SAPPHIRE AND DIAMOND BROOCH, CIRCA 1920 in platinum, set with a cluster of round cut diamonds, within a border of calibre cut sapphires, the diamonds all totalling 1.4-1.6 carats, stamped

Platinum, Synthetic Sapphire, and Diamond Bar Brooch the open-work bar brooch centering a bezel-set circle-cut synthetic sapphire measuring approx. 6.36 x 4.46 mm. and weighing approx. 1.55 cts., furt

A Sapphire & Diamond Brooch. Platinum bar mounting contains one checkerboard faceted blue sapphire with one oval faceted pink sapphire on either side. Throughout the brooch are eight bead set round di

the plain uniform bar set to the centre with an old round brilliant cut diamond and two similar slightly smaller diamonds at the terminations, unmarked white on yellow metal tests for platinum on 18ct

centering one round brilliant cut diamond [K/VS2] weighing approximately 0.92 carats total; 104 single and full cut diamonds [G-H/VS1-VS2] weighing approximately 1.40 carats total; 22 round cut and ro

AN UNHEATED SAPPHIRE, DIAMOND AND ENAMEL DRESS in platinum, set to the centre with an unheated Madagascan octagonal step cut sapphire of 1.30 carats in a border of black enamel and round brilliant cut

c. 1920-30, American, 18K yellow gold platinum toped filigree brooch featuring cushion cut sapphire with diamonds set in filigree, 2.75 in. L, 4.4 grams

Vintage Diamond and Sapphire Bow Brooch, Tiffany & Co.the delicate platinum bow with milgrain detailing and set with full cut round diamonds weighing approximately 1.15 total carats (F-G color, VS cla

AN EARLY 20TH CENTURY SAPPHIRE, PEARL AND DIAMOND HORSESHOE BROOCH, a horseshoe set with graduated old-cut diamonds, to a knife-edge bar set with a pearl and round-cut sapphires, total estimated diamo

Sapphire, diamond, and platinum flower brooch Designed as a bouquet set with cabochon sapphires, single, old European, baguette, and round brilliant-cut diamonds Platinum 2.125 x 1.625 in; Gross weigh

Art Deco brooch set with European and rose-cut diamonds, weighing in total approximately 0.90ct; with European marks; length: 2 in. (loss of one diamond and sapphire)

Circa 1910/30 Bow brooch crafted in 18k yellow Gold and Platinum, set with a center Diamond Approx. 0.20 carats. Along with 88 round cut Diamonds weighing Approx. 1.75 carats. 39 Natural Sapphires wei

weighing approximately 10.0 grams. crafted in solid Platinum, this exquisite piece is adorned by an outstanding (4) Large Genuine Diamonds round-cut, prong-set, ( G-H color and VS clarity) & (16) Larg

Sapphire, diamond, and gold winged brooch The carved sapphire body, to the sculpted gold wings set with single and round brilliant-cut diamonds Yellow gold and platinum 2 x 0.75 in; Gross weight 7.4 d

a finely crafted antique bar brooch measuring 3.8 cm in length, containing five round mixed cut sapphires (unheated) weighing approximately 1.60 carats total, 18 caliber cut emeralds, and six old Euro

A VINTAGE GEMSET FLOWER BASKET BROOCH in 18ct yellow gold and platinum, designed as a basket of flowers, set with single cut diamonds, round cut rubies, emeralds and sapphires, stamped 18ct PLAT, 4.0c

TIFFANY & CO. Platinum, Diamond, and Sapphire Pendant/Broochthe circle brooch featuring a row of round brilliant-cut diamonds weighing approx. 3.10 tcw. and a row of channel-set baguette-cut sapphires

One Art Deco period lady's round platinum diamond & sapphire brooch. The brooch measures approx. 1.50" round and features a total of twenty-three (23), bead set old mind cut diamonds measuring 1.70 -

Designed as a millegrained platinum bomb-form element, set with rose-cut and OMC diamonds later set with round faceted blue sapphire border and trefoil accents, saltwater cultured pearl and RBC diamon

Yellow gold 585 and platinum, 9.0 g. Magnificent, geometrically designed Art-Déco ring, ring bar later added, set with 19 old-cut diamonds totaling approx. 2.00 ct, H-I/SI-P1, and 6 smaller sapphir

AN ART DECO PURPLE SAPPHIRE AND DIAMOND RING in platinum, set with a round cut purple sapphire of approximately 5.59 carats, the stepped shoulders set with baguette cut diamonds, stamped PLAT, size P