Jul 07, 2026PLATINUM 5.30CT DIAMOND AND EMERALD ART DECO BROOCHEst. $6,500-$26,000$6,500Robinhood AuctionsLas Vegas, NV
3 days LeftART NOUVEAU (1880–1920), A NEOCLASSICAL GOLD, ENAMEL AND DIAMOND BROOCH WITH ATHENA (MINERVA), OWLEst. $3,000-$5,000$1,000oldstone ventures llcSummit, NJ
2 days LeftVintage 14k Gold & Diamond Convertible Pendant Brooch NecklaceEst. $1,000-$2,000$500Akiba GalleriesDania Beach, FL
1 day LeftVintage Platinum Floral Diamond Brooch with Spinning MechanismEst. $5,421-$7,047$100Mynt AuctionsNew York, NY
Aug 02, 202614K Emerald Ring, 14K Italian Chain, and 10K Diamond and Seed Pearl BroochEst. $750-$850$375(1 bid)Case Antiques, Inc. Auctions & AppraisalsKnoxville, TN
Jul 08, 2026RUBY AND DIAMOND BROOCH AND GARNET NECKLACE AND BANGLEEst. £1,000-£1,500£10BonhamsLondon, GB
3 hrs Left1960s Platinum Brooch with 9.60 Carat Diamonds by BirksEst. $8,944-$11,627$100Mynt AuctionsNew York, NY
Jul 08, 2026CHILD AND CHILD: EMERALD AND DIAMOND BROOCH, CIRCA 1890Est. £2,500-£3,500£2,500BonhamsLondon, GB
2 days LeftMAGNIFICENT VICTORIAN CERTIFICATED BURMA NO HEAT AND DIAMOND FLORAL BROOCHEst. £3,000-£6,000£1,500Etrusca AuctionsLondon, UK