Sold2016VICTORIAN 14KT YELLOW GOLD OPAL & DIAMOND BROOCHThis wonderful and romantic Victorian-era brooch shimmers with 12 colorful heart shaped opals and 44 sparkling old mine-cut diamonds, all of which are set in 14K gold. This distinctive and dreamy antiSee Sold Price
Sold201714K Gold, Opal, Diamond Brooch / PendantLarge oval 14K yellow gold brooch with hidden bail on back to convert to a pendant, set with large white opal cabochon and the foliate frame set with brilliant cut white diamonds, height 2", width 1.7See Sold Price
Sold2022Antique 14k Gold Opal Diamond Brooch PendantMETAL: 14k Gold. MEASUREMENTS: Brooch is 35mm in diameter. GEMSTONES: Opal (multiple stones are chipped). Diamonds approx. 0.60ctw. MARKED: 14k. WEIGHT: 11.4 grams.Gemstones have not been graded for cSee Sold Price
Sold2022WONDERFUL VINTAGE 14KT Y GOLD OPAL DIAMOND BROOCHAbout 1 1/2" wide, WITH 12 fabulous opals and small brilliant diamond center stone, total weight 9 dwt 14 gramsSee Sold Price
Sold2018LADIES 10K YELLOW GOLD OPAL & DIAMOND BROOCH 25.7GLadies fine 10k yellow gold, opal, and diamond brooch, weighing 25.7 grams. Unmarked but tested for 10k gold. Measures 51mm across. Condition: good, see images.See Sold Price
Sold202118KY Gold Opal, Diamond, Ring, Brooch PinFeature oval doublets and stamped "brooks". Ring is enhanced by (2) round diamonds, approx..22ctw. Pin: 2.5" x 1.25" with locking c-clasp flashes red, blue, green and yellow. Ring size 9.25 flashes blSee Sold Price
Sold202214K YELLOW GOLD, OPAL, & DIAMOND BRUTALIST BROOCHVintage Brutalist 14k yellow and white gold, diamond and opal pin. Apparently unmarked, tested for fineness. Approx. h.2.25", w. 1.125", total weight 12.6g. Ahlers & Ogletree, Inc. reserves the rightSee Sold Price
Sold2022Silver & Gold Opal Diamond Bug BroochSilver & Gold Weight 6.4g Diamond Approx. 0.75ct Bug Brooch Measurements 1.2”x1.5”See Sold Price
Sold2022JEWELRY: Tested 14K yellow gold opal and diamond brooch with pendant option, measuring 1.5 x 1.25JEWELRY: Tested 14K yellow gold opal and diamond brooch with pendant option, measuring 1.5 x 1.25 inches in diameter, centering the brooch is an oval cabochon white opal measuring 23 x 13 mm., approxiSee Sold Price
Sold202314 Karat Yellow and White Gold, Opal and Diamond Broochcluster brooch set with one oval cabochon cut White Opal, approximately 3.59 carats, enhanced with two pear shape cabochon cut White Opals, approximate total weight 1.09 carats, accented with 13 fullSee Sold Price
Sold2022Gold, Opal, and Diamond Brooch, JewelsmithGold, Opal, and Diamond Brooch, Jewelsmithin a geometric motif with an oval cabochon opal (10.94 x 19.18 mm) surmount bezel set above a hand-formed undulating gold element and with a bezel set diamondSee Sold Price
Sold2021Silver & Gold Opal Diamond Bug BroochSilver & Gold Weight 6.3gr  Diamond Approx. 0.75ct Bug Brooch Measurements 1.2”x1.2”See Sold Price
Sold2022Antique 14k Gold Opal Diamond Pendant BroochMetal : 14k Gold Designer : Not Signed Gemstone : Diamonds approx. 0.60ctw, Opal (multiple small chips on stones) Measurements : Brooch is 35mm in diameter Marked: : 14k Weight:See Sold Price
Sold2023Silver & Gold Opal Diamond Bug BroochSilver & Gold Weight 6.4g Diamond Approx. 0.75ct Bug Brooch Measurements 1.2”x1.5”See Sold Price
Sold2023Silver & Gold Opal Diamond Bug BroochSilver & Gold Weight 6.4g Diamond Approx. 0.75ct Bug Brooch Measurements 1.2”x1.5”See Sold Price
Sold2023Silver & Gold Opal Diamond Bug BroochSilver & Gold Weight 7.27g Diamond Approx. 0.75ct Bug Brooch Measurements 1.2”x1.5”See Sold Price
Sold202214k Gold Opal, Ruby, Diamond Brooch.Antique 14k Gold Opal, Ruby, Diamond Brooch. Antique brooch with a large, lovely opal stone, 16x12mm. With 6 rubies and 12 old cut diamonds. 2.6x1.6cm. 4.16gr.See Sold Price
Sold2018Unusual 18k Gold, Opal & Diamond Pendant/BroochUnusual 18k Gold, Opal & Diamond Pendant/Brooch, Signed. Art Nouveau Style. Chip on chin, mostly visible on reverse. Dimensions- Total Pin L- 2 1/2". Total Weight- 17.5.g. 11.3dwt.See Sold Price
Sold202018KY Gold Opal Ruby and Diamond BroochFeatures (1) 36.2 x 26 x 10.3mm oval Opal with green fire on blue grey with points of orange, (8) oval Rubies, approx. 7.0ctw and (109) 1.5mm round Diamond accents, approx. 1.60ctw. Opal has small abrSee Sold Price
Sold2023Ladies 18k Gold & Opal Ring, Opal & Diamond BroochLadies 18k Yellow Gold and Opal Ring, and an Opal, Diamond and 10k Yellow Gold Brooch. 7.7 g.t.w. Brooch: L: 1.25 in.See Sold Price
Sold20212 Silver and gold Opal Amethyst Diamond Bug Brooch2 Silver and Gold Weight 4.5g Opal Amethyst Diamond Bug Brooch Measurements 0.62”x0.92” See Sold Price
Sold202210K GOLD ANTIQUE OPAL & DIAMOND BAR BROOCH, 4g10k white and yellow gold pin brooch, set with a central round shaped cabochon opal, approximate total weight of opal 1.57ct, flanked by four old European cut diamonds, approximate total weight of diaSee Sold Price
Sold2017An 18ct gold opal and diamond novelty brooch, and anAn 18ct gold opal and diamond novelty brooch, and an 18ct gold gem-set cluster ring. The brooch designed as a pair of sunglasses with oval opal cabochon lenses and brilliant-cut diamond bridge, the riSee Sold Price
Sold2019A White Gold, Opal and Diamond Pendant/Brooch,A White Gold, Opal and Diamond Pendant/Brooch, containing one oval shape cabochon cut opal measuring approximately 25.20 x 16.70 mm and 29 round brilliant cut diamonds weighing approximately 2.85 caraSee Sold Price
2 days LeftDOYLE Auctioneers & AppraisersAntique Platinum, Gold, Black Opal and Diamond Brooch$600(1 bid)
BonhamsATTRIBUTED TO MARCUS & CO.: AN ART NOUVEAU GOLD, DEMANTOID GARNET, OPAL, AND DIAMOND BROOCH$2,400
13 hrs LeftFederal Assets AuctioneersVintage 14K Yellow Gold .42 ctw Diamond & Opal Round Open Brooch Pendant Necklac$1
5 days LeftRR AuctionEdwin Booth Family Collection: Heart-Shaped Opal and Diamond Brooch$1,200(2 bids)
2 days LeftDawsons AuctioneersAn opal and diamond bar brooch, the millegrain collet-set oval opal cabochon, measuring£350
Nov 03Modern JewelryAntique French Victorian Bangle Bracelet Earrings Brooch 18k Gold Diamond Enamel$20,250
7 days LeftHeritage Auctions55157: Opal, Diamond, Enamel, Platinum, White Gold Cli$2,400(1 bid)
1 day LeftJasper52Antique French Victorian Bracelet Earrings Brooch 18k Gold by Antoine Barrière$13,000