ART DECO ONYX, DIAMOND & PLATINUM BROOCH, ATTR. CARTIER

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

METAL: Platinum. MEASUREMENTS: Pendant is 38mm x 21mm. GEMSTONES: Onyx, Diamonds approx. 2.20ctw. TESTED: Plat. WEIGHT: 10.3 grams.Gemstones have not been graded for color and clarity ,and tested for

A FRENCH ART DECO ONYX AND DIAMOND ARROW JABOT PIN BROOCH in platinum, designed as an arrow, set with polished onyx and rose cut diamonds, French maker's mark, French assay marks, 4.3cm, 2.2g.

Art Deco dreicer & Co platinum bow brooch set with approx. 0.66ctw in rose cut diamonds and onyx. Some onyx stones are chipped. Brooch is 53mm x 12mm. Marked: Dreicer & Co, tested Platinum. Weight - 7

* An Art Deco Platinum, Diamond, Onyx and Emerald Bar Brooch, French, containing 133 old European and round single cut diamonds weighing approximately 2.70 carats total, 36 calibre cut onyx, and eight

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

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

Art Deco Platinum and Gem-Set Brooch, Cartierfinely designed in a flower basket motif, basket set with transitional cut, marquise cut, single cut round, and straight baguette cut diamonds weighing app

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.

Crafted out of platinum, with a European Watch and Clock Co. 19 Jewels manual movement, featuring 50 round-cut diamonds, weighing a total of approximately 1.40 carats, decorated with 14 onyx triangles

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

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

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

Art Deco Diamond, Emerald, Platinum BroochCentering a marquise-shape diamond weighing approximately 0.50 ct., accented by one hundred fourteen marquise, pear, round brilliant and single-cut diamonds w

Estate Art Deco platinum (tested) diamond double-clip brooch, c. 1930s, approx 7.46cttw, two fur or coat clips with pin mechanism to combine into single brooch, featuring pierced work and milgraining,

Art Deco Diamond, Emerald, Platinum Brooch Stones: European and single-cut diamonds weighing a total of approximately 2.95 carats; square and rectangle-shaped emeralds weighing a total of approximatel

Art Deco diamond and platinum broochcentering (1) old European cut diamond weighing approximately 0.55 ct., accented by (4) old European cut diamonds weighing a total of approximately 0.80 ct., and (1

A platinum brooch set with approximately 1.50ctw of old mine cut diamonds separated by synthetic sapphires. The brooch measures 43mm x 23mm and weighs 6.0 grams.Gemstones have not been graded for colo

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

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, Platinum Brooch Stones: Baguette, transitional, and single-cut diamonds weighing a total of approximately 2.45 carats Metal: Platinum Theme&colon

Ladies estate Art Deco platinum and approx 10.00 ct total weight diamond convertible brooch / dress clips, the frame allows it to be converted to a matched pair of dress clips, the brooch is hand fabr

AN ART DECO ONYX AND DIAMOND BAR BROOCH, CIRCA 1925 Set with two tapering onyx cabochons within a pierced surround set with old brilliant and single-cut diamonds, millegrain detailing throughout, moun

Art Deco Diamond, Platinum Circle Bow Brooch. Featuring thirty-nine old European-cut diamonds weighing a total of approximately 3.25 cttw., set in a platinum circle bow brooch mounting measuring appro