Sold2021ART DECO PLATINUM & DIAMOND PLAQUE BROOCHcontaining two old European cut diamonds [H-I/I] weighing approximately 0.55 carats total; 120 old European cut diamonds [I-J/SI] weighing approximately 5.90 carats total; and 18 baguette cut diamondsSee Sold Price
Sold20221920’ Platinum Diamond Plaque Brooch1920’ Platinum Weight 22.34gr Measurement 2.68”x1.68” Diamond 3.2gr Plaque BroochSee Sold Price
Sold2023A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set...A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set throughout with old cut diamonds, the diamonds totalling 3.0-3.5 carats, stamped 18ct and PL, 4.6cm, 7See Sold Price
Sold2021Rose cut diamond plaque brooch and cushionAntique cut diamond plate brooch in platinum. Brooch made of platinum set with rose cut diamonds in openwork motifs and three illusion claw centers with three antique cushion cut diamonds of approx. 0See Sold Price
Sold2022AN ANTIQUE DIAMOND PLAQUE BROOCH in rectangular design, set to the centre with an old cut diamond ofAN ANTIQUE DIAMOND PLAQUE BROOCH in rectangular design, set to the centre with an old cut diamond of 0.35 carats, the openwork body set with further old cut diamonds, the diamonds all totalling 2.8-3.See Sold Price
Sold2022DIAMOND PLAQUE PENDANT/BROOCH,DIAMOND PLAQUE PENDANT/BROOCH, MID 19TH CENTURY Of openwork foliate design, set throughout with cushion-shaped diamonds, principal diamond approx. 0.90ct, remaining diamonds approx. 4.40cts total, laSee Sold Price
Sold202118K Gold, Diamond and Jadeite BroochAn 18K gold brooch with diamonds and a carved jadeite plaque. The brooch is set with 11 diamonds totaling approximately .22 ctw. Total Weight: 15.5 grams (.5 ozt). Dimensions are: 2 1/2 inches long XSee Sold Price
Sold2021Platinum and Diamond BroochPlatinum and Diamond Brooch The openwork plaque of scrolled pierced ribbons centering one old European-cut diamond ap. .85 ct., flanked by 6 baguette diamonds and clusters of 18 collet-set old-mine anSee Sold Price
Sold2022AN ART DECO DIAMOND, ROCK CRYSTAL AND ENAMEL BROOCHAN ART DECO DIAMOND, ROCK CRYSTAL AND ENAMEL BROOCH the rectangular plaque with pierced diamond-set leaves, spaced by frosted rock crystal and diamond panels, between black enamel and diamond borders.See Sold Price
Sold2022AN EARLY 20TH CENTURY PLAQUE BROOCHAN EARLY 20TH CENTURY PLAQUE BROOCH the pierced lozenge-shaped plaque milgrain-set throughout with round brilliant-cut and eight-cut diamonds. Estimated total diamond weight 3.75ct, marked '18CT' andSee Sold Price
Sold2022Diamonds, Onyx, Sapphires 18k gold BroochNice Egyptian motif Plaque Brooch crafted in 18k white Gold, featuring the shape of two animals made from Black Onyx, on a Pave Diamonds set weighing Approx. 2.05 carats. And Accented with natural BluSee Sold Price
Sold2022Platinum & 18k Gold Brooch with Diamonds & SapphiresNice Plaque Brooch crafted in 18k yellow Gold and Platinum on top, accented with Diamonds weighing Approx. 0.45 carats total weight. Along with 4 Baguette Sapphires. Measurements: 1.20 x 0.85 inches.See Sold Price
Sold2021Antique Gold BroochA 29th century 14k gold brooch. With an enamel plaque set with diamonds (old cut). Dimensions: 3X2 cm, total weight: 8.2 grams. Unmarked, tested gold.See Sold Price
Sold2022Art Deco Platinum  Plaque Diamond Brooch Art Deco Platinum  Weight 18.03gr Measurement 1.28”x2.21” Plaque Diamond Approx 3.5ct Vs1-SI1 I-M Brooch See Sold Price
Sold2022A LATE 19TH CENTURY BROOCH AND EARRING SUITEA LATE 19TH CENTURY BROOCH AND EARRING SUITE, each star-set with single-cut diamonds within lobed oval plaques accented by seed pearls, the brooch with a locket back, the earrings with hook fittings.See Sold Price
Sold2022LACLOCHE FRÈRES: ART DECO DIAMOND-SET BROOCH, CIRCA 1925LACLOCHE FRÈRES: ART DECO DIAMOND-SET BROOCH, CIRCA 1925 The onyx plaque, applied with a giardinetto motif set with carnelian cabochons, old single-cut and rose-cut diamonds, the geometric borderSee Sold Price
Sold202110 Karat Gold, Diamond, & Sapphire Brooch10 Karat Gold, Diamond, & Sapphire Brooch The openwork plaque of oblong shape and geometric design is set with round brilliant diamonds weighing a total of 0.32 carats and round blue sapphires weighinSee Sold Price
Sold2022TRIO, CONVERTIBLE YELLOW GOLD, JADE AND DIAMOND PENDANT/BROOCH NECKLACETRIO, CONVERTIBLE YELLOW GOLD, JADE AND DIAMOND PENDANT/BROOCH NECKLACE Consisting of a textured gold link necklace containing 11 carved and pierced jade plaques, with removable pendant/brooch containSee Sold Price
Sold2022ART DECO SAPPHIRE AND DIAMOND BROOCH,ART DECO SAPPHIRE AND DIAMOND BROOCH, CIRCA 1925 The openwork geometric plaque millegrain-set throughout with old brilliant and single-cut diamonds, accented by circular-cut sapphires, diamonds approxSee Sold Price
Sold2022NATURAL PEARL AND DIAMOND BROOCH,NATURAL PEARL AND DIAMOND BROOCH, LATE 19TH CENTURY Of openwork plaque design, set with an 8.6 x 9.1 x 6.5mm natural button pearl, cushion and rose-cut diamonds and pearls, diamonds approx. 1.80cts toSee Sold Price
Sold202214K YG French Porcelain & Diamond BroochFrench porcelain 14K yellow gold and diamond brooch highlighting a central porcelain plaque with a left profile of a French lady, reverse signed 'Made in France'. Framed in an ornate open scroll workSee Sold Price
Sold2022ART DECO JADE AND DIAMOND EARRINGS, BROOCH AND RING, (3)ART DECO JADE AND DIAMOND EARRINGS, BROOCH AND RING, CIRCA 1920 1st: Each earring with an openwork surmount of geometric design, set with single-cut diamonds, suspending a jadeite jade plaque carved tSee Sold Price
Sold2021Platinum, Diamond and Sapphire BroochCirca 1920's; Total Gemstone weight 6.96ct; Scalloped filigree plaque set throughout with diamonds and synthetic sapphires. Largest diamond is .52ct; Appraisal upon request. 17.6 gramsSee Sold Price
Sold2023EDWARDIAN, DIAMOND AND ENAMEL BROOCHEDWARDIAN, DIAMOND AND ENAMEL BROOCH Consisting of a circular light pink guilloché enameled plaque surmounted with a diamond encrusted flower and diamond garland surround and mother-of-pearl backSee Sold Price
Jun 12Ostantix AuctionsAn important vintage 18 and 21.7 carat gold, geode plaque and diamond brooch/pendant€1,200
3 days LeftMynt AuctionsDavid Webb Platinum & 18K Yellow Gold 15.80cts Heraldic Diamond Pendant BroochUS$5
Jun 24Platinum Auction GroupArt Deco Platinum Diamond Brooch Gold Enamel Amethyst 14k YellowUS$300(1 bid)
Jun 12Ostantix AuctionsA set of an impressive 18ct gold, silver and diamond brooch with matching ear-clips 19th c€900