AN ART DECO COLOMBIAN EMERALD AND DIAMOND BROOCH in platinum, set with an octagonal step cut

A FINE ART DECO GREEN TOURMALINE AND DIAMOND BROOCH / PENDANT in platinum, set with an octagonal step cut green tourmaline of 13.50 carats within two concentric octagonal borders of round cut diamonds

Art Deco Platinum, Diamond and Emerald Brooch , set with 1 emerald-cut diamond, approx. 1.03 ct. (VVS2/I), 4 emerald-cut diamonds, each approx. .38 (VS1/H-I), 2 fancy step-cut diamonds, each approx. .

ART DECO, EMERALD AND DIAMOND DOUBLE CLIP BROOCH Containing two modified octagonal step cut emeralds measuring approximately 8.45 x 6.45 and 8.75 x 6.45 mm, two square step cut emeralds and numerous c

Set with a step-cut emerald weighing approx. 3.50 cts., in millegrained bezel with RBC diamond and engraved platinum frame, approx. .45 cts. TW. Size 9 1/2. 4.4 dwt. Accompanied by GIA report #5161009

Art Deco Diamond, Emerald, Black Onyx and Platinum Brooch. Set in the center with an approx. .65 carat old European cut diamond, H-I color, VS2 clarity. Accented with approx. 3.50 carat TW old Europea

An Art Deco diamond and platinum brooch circa 1930 designed as a dimensional ribbon bow set with single and old mine-cut diamonds, suspending articulated step-cut diamond fringe, terminating in old mi

c. 1915, platinum ring featuring an emerald-cut emerald weighing approx. 3.10 cts bezel set with octagonal frame of diamonds, sz 7, 4.9 grams

Art Deco Platinum Colombian Emerald & Diamond Ring Weighing 9.2 grams Set with a 9.37 Ct. Colombian Emerald in Center Along with 4.47 Ct. & 4.42 Ct. Colombian Emeralds And 18 European-cut Diamonds wei

AN ART DECO DIAMOND AND EMERALD BRACELET in platinum, in geometric design set with alternating rows of European cut diamonds and step cut emeralds, 17.5cm, 10.5g.

The square-cut emerald, approx. .39 ct. by formula, bezel-set within open form OEC diamond octagonal head, diamond shoulders, approx. 1.0 cts. TW. Ca. 1925. Size 6 1/4. 2.6 dwt.

BOUCHERON, AN EXCEPTIONAL ANTIQUE ART DECO DIAMOND AND ENAMEL BROOCH in platinum and 18ct white gold, the geometric body set with old cut diamonds within two octagonal borders of black enamel, the pri

AN ART DECO PLATINUM, EMERALD, AND DIAMOND BROOCH Centering an emerald-cut emerald measuring approximately 9.25 x 5.90 x 2.80 mm, and set with old European, old mine, single, and baguette-cut diamonds

An Art Deco diamond and platinum clip/brooch set with circular-cut, kite-shaped, emerald-cut, and calveshead diamonds; estimated total diamond weight: 8.00 carats, all within an openwork setting. (15.

Art Deco Rock Crystal Brooch with single cut diamonds, Emerald, Ruby, Ametrine set in platinum. Gems Cabochon cut, diamond full cut. Gems tested by jeweler. small ametrine missing on one side. Please

TWO ART DECO PLATINUM AND DIAMOND RINGS Both unmarked. 1) Invisibly-set with three step-cut emeralds framed by small diamonds. Size 4½. 2) Three full-cut diamonds bordered by sapphires. Size 4½. App

Art Deco Platinum, Diamond, and Emerald and Synthetic Emerald Brooch, Katz & Ogushdesigned in a stylized ribbon motif centering on a bezel set old European cut diamond (5.25 x 5.25 x 2.88 mm) weighing

Very Fine Art Deco Design Approx. 4.25 Carat Cut Diamond, 1.50 Carat Colombian Emerald and Platinum Engagement Ring. Set in center with a 3.15 carat round cut diamond K color, SI1 clarity and flanked

A FRENCH ART DECO DIAMOND CLIP BROOCH in platinum and 18ct white gold, designed as a shield, set with shield, baguette, emerald, and single cut diamonds all totalling 3.0-3.5 carats, French assay mark

NO RESERVE - AN ART DECO AQUAMARINE AND DIAMOND DRESS RING, Made in platinum, Octagonal step cut aquamarine, weighing approximately 3.62 carats, Single cut diamonds, Stamped Pl and numbered 4902, Size

Art Deco emerald, diamond, platinum and 18k yellow gold ring centering (1) rectangular step cut emerald, weighing approximately 0.80 ct., accented by rose and old single cut diamonds totaling approxim

Art Deco Lady's Emerald & Diamond Platinum Bracelet 7''. Impressive bracelet includes (27) rectangular step cut 4.3x3.7mm to 6.2x3.7mm emerald beryl of an estimated 12 carats total weight. Their color

AN EMERALD AND DIAMOND CLUSTER RING in yellow gold and platinum, set with an octagonal step cut emerald of approximately 2.95 carats in a cluster of single cut diamonds, stamped PLAT, size Q / 8.25, 4

Art Deco Diamond, Emerald, Platinum Ring The ring features a triangle step-cut diamond measuring 6.20 x 5.75 x 2.17 mm and weighing approximately 0.40 carat, accented by transitional-cut diamonds weig

View a video of this lot: Click HereCrafted in 18K white gold; set with rectangular step cut emeralds, weighing a total of approximately 7.32 carats; accented by round brilliant cut d