JEWELRY: Art Deco diamond and black obsidian bow brooch, stamped platinum, with milgrain, and hidden

JEWELRY: Art Deco Diamond & Sapphire Circle Brooch, tested platinum Art Deco open circle brooch with milgrain, diamonds, and natural sapphires. Containing 28 bead- set transitional cut diamonds with a

Art Deco platinum brooch displaying a central trio of (3) milgrain bezel set Old European cut diamonds measuring approx. 6.0mm, 4.5mm and 4.6mm. Diamonds are set within a platinum filigree frame displ

Platinum Art Deco brooch with black onyx and diamond bow brooch, 2 in. L, 9 grams

Vintage handmade Art Deco period Platinum and 18K Gold "Bar" brooch with black enamel, stamped "CDP Inc. France". A double row of (32) Round Brilliant Cut Diamonds, total weight 1.50ct, Clarity VS1, C

An Art-Deco black onyx bow brooch ca 1930's. 14k white gold double pin back and frame. Diamonds set in platinum weighing approximately three carats total weight including center marquise cut diamond.

including a ladies Art Deco Croton diamond and platinum case watch, interior stamped ‘10% Irid Plat’, manual 17 Jewel movement, black cord strap, the watch is currently running, however not guaran

Diamond Brooch. Art Deco 14kt yellow gold brooch displaying a central carved jade plaque with a surround of red and black enamel work and (4) single cut diamonds. Stamped, "14k" verso. From

DESCRIPTION: An Art Deco Pin Brooch comprised of an 18k yellow gold foundations, inlaid with black Onyx, a platinum setting inset with Diamonds and a final Ruby accent. Stamped along the "750" Total W

Sapphire Brooch or Bar Pin. Art Deco Cartier platinum bar pin or brooch comprised of a central onyx openwork frame with (2) sapphire cabochon accents, and (3) stacked bands of pave diamonds; flanked b

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 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

With three millegrained bezel-set OEC diamonds, approx. .90 ct., 1.50 cts. or .90 ct., centering graduated lines of OEC diamonds, approx. 5.0 cts. TW, in a geometric design. Ca. 1930. Stamped Wise & S

Designed as a bow encrusted with diamonds. Overall approx. 160 top quality diamonds, approx.10Ct in total. Marked. Total weight: 21.07 gr, length: 5.5 cm Condition: For a detailed condition report, p

ART DECO SAPPHIRE AND DIAMOND BROOCH, 1930S in platinum, designed as a bow, pave-set with circular-cut diamonds, accented with calibre-cut sapphires, estimated total diamond weight 12.00-14.00 carats,

A finely crafted suite of jewelry in a bow a ribbon design with openwork gallery, constructed with hinged and articulated components throughout. The parure consists of a matching necklace, bracelet an

This gorgeous Art Deco ring is crafted from platinum and 14k white gold. It has a long double marquise shape with scallp ends and milgrain design, the fine wire open frame. The center has two large ro

Art Deco Diamond, Black Onyx, Platinum Bracelet The bracelet features transitional-cut diamonds weighing a total of approximately 4.50 carats, enhanced by calibré-cut black onyx, set in platinu

Bracelet. Art Deco platinum articulated bracelet displaying (3) marquis cut faceted diamonds with faceted emerald surround, and Old European cut diamond accents. Marquis cut diamonds measure approx. 8

Tiffany & Co. Art Deco Diamond, Platinum Brooch Stones: European, transitional, and Swiss-cut diamonds weighing a total of approximately 6.00 carats Metal&col

Art Deco Diamond, Black Onyx, Platinum Bracelet Stones: European and transitional-cut diamonds weighing a total of approximately 13.70 carats; carved black onyx Metal&col

Art Deco Platinum Diamond Brooch/Clips Weighing 28.8 grams Set with 108 Diamonds weighing app. 12.00 Ct. F-H Color, VS1-SI1 Clarity 2 Inches in length

and Sapphire Ring. Art Deco platinum ring with central 2.59 ct round brilliant cut diamond with a surround of pave diamonds and bands of sapphire accents. Accompanied by April 4th, 2018 GIA Report No.

JEWELRY: Platinum Art Deco diamond and onyx bracelet, hinged bracelet tested platinum with 18K white gold clap tongue, tapered width: 5.7mm-7.4mm, total weight: 24.8 grams, set with a total of twenty

Art Deco French Platinum Diamond Brooch Weighing 21.9 grams Set with app. 9.50 Ct. of Diamonds E-G Color, VVS-VS Clarity 2 inches in length