Sold2016An Art Deco Black Onyx & Diamond Bow PinPlatinum Art Deco brooch with black onyx and diamond bow brooch, 2 in. L, 9 gramsSee Sold Price
Sold2017Diamond and Onyx Bow Brooch in 14 Karat White Gold andAn 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.See Sold Price
Sold2022Deco Diamond and Platinum BroochArt 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 EuropeaSee Sold Price
Sold2020Art Deco Dreicer & Co Platinum Diamond Onyx Bow BroochArt 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 - 7See Sold Price
Sold2022An Art Deco Diamond & Onyx Geometric Bow PinPlatinum geometric bow pin featuring diamonds weighing approx. 3.00 ctw with an average color grade of G-H and an average clarity grade of VS, bead set with French cut black onyx channel set in designSee Sold Price
Sold2023Art Deco Platinum & 18k Gold Car Pin BroochDESCRIPTION: 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 WSee Sold Price
Sold2018Vintage Diamond, Platinum, 14k Yellow Gold Bow Brooch.Vintage Diamond, Platinum, 14k Yellow Gold Bow Brooch. Designed as an open work bow with black velvet backing, the center featuring one old European-cut diamond weighing approximately 0.30 ct., accentSee Sold Price
Sold2022Antique Opal Cameo Diamond Platinum BroochAntique black opal cameo set atop onyx set in platinum and 18kt white gold with diamonds. Width 1 3/8;; total weight 7.5 grams Condition: Two tight fissures in onyx at 12 and 6, perhaps intentionalSee Sold Price
Sold2022Estate Diamond & Gems 18k Yellow Gold Turtle Brooch PinThis adorable brooch is crafted from 18k yellow gold with a polished finish featuring a handmade turtle, featuring small assorted shape gemstones, turquoise, Mother of pearl and black onyx, all mounteSee Sold Price
Sold2020Art Deco Diamond, Black Onyx, Platinum BraceletArt 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 platinuSee Sold Price
Sold2021DIAMOND & PLATINUM BOW BROOCH, C. 1920, L 2", T.W. 5 GRDIAMOND & PLATINUM BOW BROOCH, C. 1920, L 2", T.W. 5 GR 5 gr. A small very delicate brooch in bowknot form. L 2". center diamond approx 10pts.Four blue sapphire baguettes. Myriad of diamonds assembledSee Sold Price
Sold2018SCHUMANN & SONS DIAMOND & PLATINUM RIBBON BOW BROOCHDesigned as dimensional knotted ribbon of OMC diamonds, approx. 9.45 cts TW. Early 20th c. Stamped Schumann & Sons. 2 1/2" x 2". 19.6 dwt.See Sold Price
Sold20161.50 CTW Diamond & Platinum Deco Bow BroochDESCRIPTION: Tested 90% platinum Art Deco bow brooch set with forty-nine round full and single cut diamonds of .02 to .06 carat each. Clarity SI to I1, color I-J. Approximately 1.50 ctw. Also set withSee Sold Price
Sold2018Art Deco Diamond, Platinum Circle Bow Brooch.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 approSee Sold Price
Sold20183.5ct Diamond and Platinum BroochAntique Approx. 3.5 Carat Old European Cut Diamond and Platinum Bow Brooch. E-F color, VS1 - VS2 Clarity. Probably French. Unsigned. Measures 2-1/2" x 1-1/2". Approx. weight: 16.0 grams. Condition: GoSee Sold Price
Sold2022Mid Century Platinum Diamond Bow Brooch PinMETAL: Platinum. MEASUREMENTS: Brooch is 58mm x 34mm. Center stone is missing, center will fit approx. 6.5mm stone. GEMSTONES: Diamonds approx. 3.00ctw. TESTED: Plat top/ Gold back. WEIGHT: 15.7 gramsSee Sold Price
Sold2023Platinum Diamond Bow Brooch 11gramsDiamonds Tested. Marked 'g5x2' H 1.8in W 1.8in D .33in Weight 11.15 Grams TWSee Sold Price
Sold2021Vintage Platinum & Diamond Bow BroochOne 20-point center stone with channel set round and baguette diamonds. Very clean and brilliant diamonds. Unmarked. 1 3/4" x 1". 8.5 grams, inclusive. In good condition.See Sold Price
Sold2015LADIES 18K WHITE GOLD ONYX & DIAMOND BOW BROOCHLADIES 18K WHITE GOLD ONYX & DIAMOND BOW BROOCH Ladies 18K white gold onyx and diamond bow brooch. Includes six pieces of onyx, and approximately seventy-eight round white accent diamonds. Weight: 12.See Sold Price
Sold202255349: TURI Diamond, Black Onyx, Platinum, Gold JewelryTURI Diamond, Black Onyx, Platinum, Gold Jewelry Suite Stones: Full-cut diamonds weighing a total of approximately 11.55 carats; carved black onyx Metal: 18kSee Sold Price
Sold202255280: Art Deco Diamond, Black Onyx, Platinum Bracelet 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&colSee Sold Price
Sold202255038: Cartier Diamond, Black Onyx, Platinum Eternity BCartier Diamond, Black Onyx, Platinum Eternity Band, French Stones: Full-cut diamonds weighing a total of approximately 11.00 carats Metal: Platinum Marked:See Sold Price
Sold202255442: TURI Diamond, Black Onyx, Platinum, Gold Ring STURI Diamond, Black Onyx, Platinum, Gold Ring Stones: Full, straight and tapered baguette-cut diamonds weighing a total of approximately 3.00 carats; emerald-See Sold Price
Sold2022A Vintage Diamond & Black Onyx Circle Pin in PlatinumPlatinum open circle pin featuring old European and round cut diamonds, weighing approx. 2.00 ctw, and French cut black onyx, milgrain edge, 18K safety catch, 1.25 in. diameter, 5.8 grams Provenance:See Sold Price
3 days LeftA.H. Wilkens Auctions & AppraisalsART DECO PLATINUM AND DIAMOND BOW BROOCH, 10.1gCA$350(1 bid)
Jun 12Quittenbaum Kunstauktionen GmbH, Historic butterfly brooch with diamonds as well as sapphire, ruby and emerald cabochons€7,000
6 days LeftMiami Auctions & Appraisals LLC Antique Art Deco Diamond Emerald Platinum Bow Brooch Pendant Necklace$21,000
6 days LeftMiami Auctions & Appraisals LLC Cartier Antique Art Deco Diamond Pearl Onyx Platinum Brooch Pin$7,200
2 days LeftSeized Assets AuctioneersVintage 18k White Gold Diamond Black Onyx and Coral Clown Brooch Pin$1
2 days LeftSeized Assets AuctioneersAntique Edwardian 18k Gold Platinum Black Onyx & Rose Cut Diamond Belly Bracelet$1(1 bid)
Jun 06Elmwood'sAN ART DECO DIAMOND AND ONYX BAR BROOCH in platinum and gold, set with a row of old cut diamonds£3,500
3 days LeftMiami Auction GalleryANTIQUE BLACK STARR & FROST-GORHAM DIAMOND PLATINUM DECO BROOCH PIN$12,750
3 days LeftA.H. Wilkens Auctions & Appraisals18K GOLD, DIAMOND, ONYX & GEM-SET BIRD BROOCH, 24gCA$1,500
21 hrs LeftMynt AuctionsDavid Webb Platinum & 18K Yellow Gold Manhattan Minimalism Onyx Diamond Black Enamel Necklace$5