Sold2020Round diamond millegrain set platinum brooch, centralRound diamond millegrain set platinum brooch, central diamond ct. 0.60 circa, other smaller diamonds in all ct. 1.70 circa, g 15.80 circa, length cm 5.80 circa. IT Spilla in platino con diamanti rotonSee Sold Price
Sold2016An Art Deco Turquoise, Diamond And Gemstone BroochCentering a round cabochon turquoise in a pierced millegrain platinum motif, set throughout with old full and single cut diamonds with calibré cut gemstone flowers and turquoise detailing; total diamSee Sold Price
Sold2018A Victorian unmarked white gold or platinum diamond setA Victorian unmarked white gold or platinum diamond set brooch Of star form, the central stone spreading to approximately 0.5 carat. 4 cm wide.See Sold Price
Sold2023A white gold diamond bow and ribbon brooch,A white gold diamond bow and ribbon brooch, A white gold diamond bow and ribbon brooch, designed as a stylised bow and ribbon, with a round brilliant cut diamond millegrain set to the centre, to a blaSee Sold Price
Sold2021Tiffany & Co., Schlumberger Gold, Platinum and DiamondTiffany & Co., Schlumberger Gold, Platinum and Diamond Clip-Brooch The curved layered petals tipped by a diamond-set terminal and opening into an 'en tremblant' center of round diamond-set sprays, totSee Sold Price
Sold2021Tiffany & Co., Paloma Picasso Gold, Platinum andTiffany & Co., Paloma Picasso Gold, Platinum and Diamond 'Scribble' Brooch 18 kt., the polished scribble tipped by 9 platinum-set round diamonds ap. .20 ct., signed Tiffany & Co., Paloma Picasso, ap.See Sold Price
Sold2020A Ruby & Diamond Circle Brooch.A Ruby & Diamond Circle Brooch. Platinum mounting contains 36 prong set round brilliant diamonds and 36 round rubies. The total diamond weight is approximately 1.80 carats. The diamonds are approximatSee Sold Price
Sold2022PERIOD EDWARDIAN PLATINUM AND DIAMOND BROOCHAntique handmade, ribbon form brooch set with Old Mine cut and Old European cut round brilliant diamonds. Bezel set in the center is one elongated pear shape diamond, measuring .66ct. Clarity SI1, ColSee Sold Price
Sold2023Platinum & Diamond Starburst BroochContaining a center round bezel set diamond, weight appx. .20ct, surrounded by eight prong set round diamonds, each weighing appx. .10ct, border of four groups of bezels set diamond, each weighing .03See Sold Price
Sold2016Platinum Diamond and Sapphire BroochPlatinum diamond and sapphire brooch, central double cabochon, natural sapphire, 10.90 x 5.49 x 5.29 mm, with GIA sapphire report, 50 other sapphire of various sizes, 64 round brilliant diamonds of vaSee Sold Price
Sold2022Elegant Platinum and 5.5ct Diamond BroochDESCRIPTION: A Platinum Diamond Brooch/Pendant features a dangling design inset with an array of Baguette, Marquee, and Round cut diamonds. The center set with the largest 0.5ct round Cut Diamond, furSee Sold Price
2020TIFFANY & CO PLATINUM, GOLD & DIAMOND DEMI PARURE, 20gIncluding one brooch and a pair of earrings, each in a ribbon design with a wide band of small round brilliant cut diamonds pave set in platinum between raised yellow gold edges. Total of 62 diamondsSee Sold Price
Sold2020McTeigue Platinum Diamond Open Circle Brooch PinPlatinum open circle brooch, set with baguette and round diamonds - approx. 2.40ctw. Brooch is 30mm in diameter. Marked: Maker's Mark Irid. Plat. Weight - 8.5 grams.See Sold Price
Sold2018EXQUISITE PLATINUM AMETHYST & DIAMOND BROOCHLadies' exquisite circular platinum brooch, set with approx. ten rectangular cut sections of stunning Amethyst, alternating with settings containing round brilliant cut Diamonds. Measures approx. 1-3/See Sold Price
Sold2022An early 20th-century diamond bar broochAn early 20th-century diamond bar brooch millegrain-set with two round brilliant-cut diamonds, rose-cut diamond detail, unmarked(Length: 6.5cm)See Sold Price
Sold2023Vintage 4.35cts Diamond Cabochon Ruby Sapphire Platinum Floral Brooch Pinweighing 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) LargSee Sold Price
Sold2024Jewelry. Platinum Diamond Art Deco bracelet w/ central marquise diamond, approx 3mmx7mm flanked byJewelry. Platinum Diamond Art Deco bracelet w/ central marquise diamond, approx 3mmx7mm flanked by three small round diamonds, small round diamonds set all around the bracelet, 15.25 grams, approx 7 1See Sold Price
Sold2017PLATINUM & DIAMOND BROOCHset with 58 round diamonds approx. 1.98 carats, appear nice clean stones, also with double bale to serve as a pendant, tests platinum, 1.6in., 11.7gms. (repair to bottom center with minor soldering toSee Sold Price
Sold202114k GOLD & PLATINUM DIAMOND SET HORSE BROOCHFourteen karats yellow gold and platinum. diamond set horse pin. The pin consists of a horse atop a platinum base accented with a total of twenty-four round brilliant cut diamonds. The pin secures witSee Sold Price
Sold2021Art Deco Diamonds, Pearl 18k Gold & Platinum Bug BroochArt Deco Bug brooch Crafted in 18k yellow Gold and Platinum, set with Diamonds, Two Round Shaped Rubies and a 8mm Round Pearl. Weight: 5.6g. Measurements: 1.4x0.8".See Sold Price
Sold2022Unmarked white metal diamond broochUnmarked white metal diamond brooch, tests as platinum, filigree setting set with 13 round brilliant diamonds, the largest 6 mm, about 80 pts; (4) 5 mm, about 50 pts each; (4) 4 mm, about 25 pts each;See Sold Price
Sold2023JEWELRY. Art Deco Platinum and Diamond Brooch.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 displSee Sold Price
Sold2019PLATINUM & DIAMOND BROOCH, 6.50CTWPLATINUM & DIAMOND BROOCH, 6.50CTW set with 58 marquise and round diamonds approx. 6.50 carats (in our opinion: I color, VS2-SI1clarity, however not guaranteed), largest diamond 0.34 carats, tests plaSee Sold Price
Sold2024JEWELRY. Art Deco Platinum and Diamond Brooch.Art Deco platinum brooch displaying a central bezel set Old Mine cut diamond flanked by (2) bezel set Old Mine cut diamonds and further accented by a surround of smaller Old Mine cut diamonds. CentralSee Sold Price
6 days LeftAdam's AuctioneersAN EARLY 20TH CENTURY SAPPHIRE, CULTURED PEARL AND DIAMOND BAR BROOCH The central€120
Oct 03Mynt AuctionsDavid Webb Platinum & 18K Yellow Gold Diamond And Pearl Circular Openwork Brooch$5
Oct 20Miami Auctions & Appraisals LLC Antique Art Deco 5.50ct Diamond Platinum Filigree Geometric Open Brooch Pin$8,200
Oct 23Miami Auction GalleryAntique Art Deco 5.50ct Diamond Platinum Filigree Geometric Open Brooch Pin$8,000
4 days LeftMynt AuctionsTiffany & Co. Schlumberger Platinum/18K Yellow Gold Oval Cut Peridot And Diamond Brooch$5(1 bid)
2 hrs LeftMynt AuctionsDavid Webb Platinum & 18K Yellow Gold 20.00 Carats Diamond Double Clip Convertable Brooch$5
Oct 20Miami Auctions & Appraisals LLC Vintage 9.80cts Diamond Flower 18k Gold Platinum Brooch Pin$11,000
Oct 20Miami Auctions & Appraisals LLC Antique Deco 6.55cts Old European Diamond Platinum Filigree Brooch Pin$14,000